It is not allowed to deal with him as a real physical brother. Hijab is must on you in front of him if he is Baaligh and it is Haraam to shake hands with him because he is not your real physical brother.
As the holy verse in the Quran says God's mercy encompasses all. You can ask the Almighty to show His mercy upon them, and overlook their shortcomings, etc.
Unfortunately some Muslim groups believe it is haram to prayfor a non-Muslim in any way, but reality is such an approach is difficult for one whose family might not have recognised Islam and be good people.
Just requesting Almighty God to show His mercy would hopefully assist them in their next life.
And Allah knows best.
It depends whether the food is Najis or not. Najis food is not permissible to consume whether from a Muslim or non Muslim. Najis food means any food which was touched with wetness by a non Muslim (except People of Book according to some Maraaji').
If you know that the food is Najis, it will be not permissible for you to eat it at all.
I am sorry to hear about this situation. This is certainly despicable behavior from him and a breach of trust.
It is difficult to have a marriage without trust. However, it is your decision whether or not you wish to stay in the marriage.
None of us here can give you good advice on whether or not to stay in the marriage without knowing your situation (both personally and also in terms of practical matters). It is best if you can discuss this with people who you know in person whom you trust, such as family or people whose advice you respect.
Wishing you the best either way, and sorry you have to go through this.
If your father gives you the pocket money as a gift for you with out any condition, you can then spend it as you wish in lawful expenditure or save it or invest it. No one will have then right on that money or ask you to return it. If your father gives you pocket money for spending and not for saving or investing, then he has right to ask you to use it for your expenses only and return the amounts which were not used in your expenses.
Most of parents give their children pocket money with out condition.
This is unacceptable. Whatever the family's religion may be, Muslims must honour and respect their families. Your wife has no right to do this.
If she has certain concerns, you should address them. There might be something she has seen, like abuse, or intimidation, or trying to brainwash your son, etc... Try to pinpoint what the dispute is about, and deal with it.
But if it is just because she has no respect for your family, this does not give her the right to deprive her son of visiting or being with his grandparents and family.
With prayers for your success.
If all other shar'i requirements are met, yes, she can marry that man.
The marriage proposal must take its normal procedure, primarily around the parents giving their consent and their blessings. This is the most important part.
A second important step is to see the character traits of the person, their moral standards, their family, compatibility, etc.
A third step to take is seeking consultation and advice, trying to find out if this prospect marriage is a good idea, and the obstacles they might face. This is necessary for any case of marriage, Muslim born, or convert.
Both of them should study this from all its angles, for the sake of making the right decision and having a successful marriage.
With prayers for your success.
Not at all. No matter how bad is your brother or relative, you should never cut ties with him but you should avoid endorsing his wrong acts.
You must keep a link with him through any suitable way of communication and keep advising and guiding him as and when you have a chance.
If you mean by 'stay' to live with your husband's family then no, this isn't required. In fact it is obligatory upon the husband to provide a suitable accommodation for his wife in order for her to feel safe and comfortable.
Living with in-laws can be an option for the newly married couple who have just gotten on their feet, however it has been shown many times that that long term living with in-laws can cause many problems as well as a lack of privacy for the couple. Therefore it is recommended that the couple try to eventually find their own place.
May Allah grant you success
Thank you for your question. While it is true that there are some things out of our control, the choice to believe is within our control. Being born in a Muslim family or not is not the sole determining factor in the attainment of belief. If that was the case the early Arabs who were mainly born into polytheistic households would not have converted to Islam. Similarly, there would be no hypocrites or apostates from Muslim families, if the family you are born in is the sole determinant. Rather, God has given each individual the intellect and intuition to find the correct path, no matter what situation they start with. And everyone is rewarded according to their effort.
May you always be successful
We Beed to look after selves as well as our family and children. We need good deeds for our future as much as we can. We also should for our family and children Whatever they need to have a respectable livelihood till they are able to earn for themselves. Obviously, we believe that Allah (SWT) will never leave them as He never left us.