Answer:

Zināʾ (Arabic: الزنا‎ ) is generally defined by Islamic Law as unlawful sexual relations/intercourse. All type of sexual relations such as adultery, fornication and other types(between the owner and his female slave) are considered zina. Islam strictly prohibits any kind of sexual relationship between the people without having  a marriage.

Being single does  not give you the permission to have sexual relations with others. Following verses from the Holy Qur’an covers this issue:

وَالَّذ۪ينَ هُمْ لِفُرُوجِهِمْ حَافِظُونَ اِلَّا عَلٰىۤ اَزْوَاجِهِمْ اَوْ مَا مَلَكَتْ اَيْمَانُهُمْ فَاِنَّهُمْ غَيْرُ مَلُوم۪ينَ

They who guard their private parts; only to their wives or those their right hands possess, they will not be reproof. (Surat Al-Mu’minūn 23/5-6)

قُلْ تَعَالَوْا اَتْلُ مَا حَرَّمَ رَبُّكُمْ عَلَيْكُمْ اَلَّا تُشْرِكُوا بِه۪ شَيْـًٔا وَبِالْوَالِدَيْنِ اِحْسَانًا وَلَا تَقْتُلُوۤا اَوْلَادَكُمْ مِنْ اِمْلَاقٍ نَحْنُ نَرْزُقُكُمْ وَاِيَّاهُمْ وَلَا تَقْرَبُوا الْفَوَاحِشَ مَا ظَهَرَ مِنْهَا وَمَا بَطَنَ وَلَا تَقْتُلُوا النَّفْسَ الَّت۪ي حَرَّمَ اللّٰهُ اِلَّا بِالْحَقِّ ذٰلِكُمْ وَصّٰيكُمْ بِه۪ لَعَلَّكُمْ تَعْقِلُونَ

…do not approach to indecencies, what is apparent of them and what is concealed…(Surat Al-’An`ām 6/151)

اِذْ تَلَقَّوْنَهُ بِاَلْسِنَتِكُمْ وَتَقُولُونَ بِاَفْوَاهِكُمْ مَا لَيْسَ لَكُمْ بِه۪ عِلْمٌ وَتَحْسَبُونَهُ هَيِّنًا وَهُوَ عِنْدَ اللّٰهِ عَظ۪يمٌ

…Zina at the sight of Allah, is a grievous sin.

(Surat An-Nūr 24/15 “Zina” word located in the 2^nd verse of the Surat and carried on its meaning to the following verse)

 وَلَا تَقْرَبُوا الزِّنٰىۤ اِنَّهُ كَانَ فَاحِشَةً وَسَاۤءَ سَب۪يلًا

And do not approach to unlawful sexual intercourse(adultery, fornication); surely it is an indecency and an evil way. (Surat Al-’Isrā’ 17/32)

“The marriage of a woman who marries without the consent of her guardians is void, her marriage is void, her marriage is void. If there is cohabitation, she gets her dower for the intercourse her husband has had. If there is a dispute, the sultan (man in authority) is the guardian of one who has none. “

If the girl would like to marry you, it means she is in dispute with her father. Since she has the right for this, the Messenger of Allah decreed in this case that the right of guardianship passes from her father to the sultan (man in authority). If you go near a scholar in authority, he can marry you.

A man called Hizam married her widowed daughter Hansa. His daughter did not want this marriage. She came near the Messenger of Allah (p.b.u.h.) and explained the situation. He declared the marriage null and void. Then the woman married Abu Lubabe b. Abdi’l Munzer.

“Your Lord decrees not to worship any but Him and to be good to your parents; if both or any one of them attain old age with you, do not say to them even ‘Uff’ neither neglect them, but speak to them with respect and be humble and tender to them and say: ‘My Lord, show mercy to them as they nurtured me when I was small.” (Al-Isra’ 17/23-24)

A bride does not have to look after her parents-in-law. There is no such order in the Quran or in Hadiths that says so. But one of the duties of woman is to treat her husband well. A woman that is not treating her parents-in-law well is also a woman not treating her husband well. Besides, treating the old ones well is one of the nice behaviors that our Religion advises.

The Prophet of Allah (p.b.u.h.) commands:
“He, who does not show mercy (and tenderness) to the young and respect to the elder, is not one of us.” (Tirmidhi, Birr, 15; Abu Dawud, Adab, 58; Musnad, 1/257)

“He, who shows mercy, sees mercy from Allah. (So) Show mercy to those on the ground and you will see mercy from the heavens.” (Abu Dawud, Adab, 58)

The brides should also put themselves in their husbands’ shoes. How would they like to be treated, they should treat their parents-in-law in that way.

Come together with your fiancee/husband and plan how you can treat them in the best way. You definitely do not have to live in the same house; but if they are needy we advise you to hire a house close to theirs. If you behave them well for the sake of Allah, Allah will bestow a happy family and marriage in this world upon you, as well as Gardens (Heaven) in the hereafter, inshallah.

For further information, please refer to: http://www.islamandquran.org/research/subsistence-money-of-women.html

“Your Lord decrees not to worship any but Him and to be good to your parents; if both or any one of them attain old age with you, do not say to them even ‘Uff’ neither neglect them, but speak to them with respect and be humble and tender to them and say: ‘My Lord, show mercy to them as they nurtured me when I was small.’ Your Lord is best aware of what is in your hearts. If you are righteous, He will indeed forgive those who relent and revert (to serving Allah).” (Al-Isra’/ Children of Israel 17/23-25)

“And We have enjoined upon man [care] for his parents. His mother carried him in weakness upon weakness, and his weaning is in two years. Be grateful to Me and to your parents; to Me is the [final] destination. But if they endeavor to make you associate with Me that of which you have no knowledge, do not obey them but accompany them in [this] world with appropriate kindness and follow the way of those who turn to Me. Then to Me will be your return, and I will inform you about what you used to do.” (Al-Luqman 31/14-15)

You should treat your husband with sympathy and understanding. There will surely be problems in the family if one of the spouses is unhappy, you should know that. Put yourself in his shoes. What would you do to your mother? Leave her in the street? How would you like to be treated?

You should try to cooperate. He should think on how he can treat his parents and you should think on how you can treat your parents-in-law in the best manner. You don’t have to live in the same house. If you treat them well, help them for the sake of pleasing Allah, He will grant you a peaceful home and a peaceful marriage in this world and the Gardens of eternity in the hereafter insha’Allah.

Please click the link below for further information on the issue of looking after parents-in-law:

http://www.islamandquran.org/fatwas/should-a-bride-look-after-her-parents-in-law.html

A bride does not have to look after her parents-in-law. There is no such order in the Quran or in Hadiths that says so. But one of the duties of woman is to treat her husband well. A woman that is not treating her parents-in-law well is also a woman not treating her husband well.
Besides, treating the old ones well is one of the nice behaviors that our Religion advises.

The Prophet of Allah (p.b.u.h.) commands:
“He, who does not show mercy (and tenderness) to the young and respect to the elder, is not one of us.” (Tirmidhi, Birr, 15; Abu Dawud, Adab, 58; Musnad, 1/257)

“He, who shows mercy, sees mercy from Allah. (So) Show mercy to those on the ground and you will see mercy from the heavens.” (Abu Dawud, Adab, 58)

The brides should also put themselves in their husbands’ shoes. How would they like to be treated, they should treat their parents-in-law in that way.

In this respect, for the brides to treat their parents-in-law well and cater to is a very nice deed and they will surely be rewarded by Allah for this. But as we said, there is no obligation on this issue. The ones that should look after his/her parents are the children. The men shouldn’t force their wives for this and try to take care of things themselves while appreciating the help and devotion of their wives.

1-      Half brothers/sisters on the mother’s side

2-      Half brothers/sisters on the father’s side

3-      Full (blood) brothers/sisters

A man/woman is not allowed to get married to his/her sibling if their brotherhood is in one of the mentioned categories. However, if they are stepsiblings not from the categories above, then they are eligible for marriage. For example, if Ahmet’s father gets married to a woman other than Ahmet’s mother and if that woman has a daughter from another man, Ahmet can marry that woman’s daughter.

On the other hand, one that claims he/she is a Muslim and doesn’t perform the prayers is clearly disobeying the orders of Allah and committing a great sin. Thus, a young Muslim woman is advised to marry a Muslim man that cares about his responsibilities to Allah, rather than disobeying him at least five times a day.

1- Faith is very important in marriage. The Glorified Allah commands:

“Do not marry polytheists (mushrik) women until they believe; a slave woman who believes is better than a free woman who does not believe, even though the latter may appear very attractive to you. (Likewise) do not wed your girls to polytheist (mushrik) men until they believe; a slave man who believes is better than a free man who does not, even though he may be very pleasing to you. These mushrik people invite you to the Fire while Allah by His grace invites you to the Heaven and His forgiveness, and He makes His revelations clear to the people so that they should learn a lesson and follow the admonition.” (Al-Baqara/ The Cow  2/221)

2- Both of the spouses should be honest and decent. They should not consider marriage as a toy of love. The Glorified Allah commands:

“(…) This is the decree of Allah. Besides these, it is lawful for you to marry other women if you maintain chastity and do not commit fornication (…)” (An-Nisa/The Women 4/24)

3- Both of the spouses should be innocent or honestly repentant about adultery. The Glorified Allah commands:

“A man guilty of adultery shall not marry any but the woman guilty of the same or a mushrik woman, and none shall marry a woman guilty of adultery but the man guilty of the same or a mushrik man. Such marriages are forbidden to true believers.” (An-Noor 24/3)

“Except for those who repent and reform themselves, Allah is Forgiving and Merciful.” (An-Noor/The Light 24/5)