Various masaail of Nikaah

Q: Is It necessary/compulsory for husband and wife to live together if/after they consummated the marriage (via having jimaa) and if they don't live together will they get sin?

Q:

1. A Non-Muslim married couple who were married from before, after reverting to Islam, is it compulsory for the couple to do Nikah again?

2. In the above situation, after accepting Islam, if its compulsory to do Nikah again, is mahr (dowry) compulsory?

3. Is the Nikah valid just by registering the marriage?

Q: I am engaged but I am unclear about the boys deeni committments. I think he doesn't know much about deen as he says that he is a simple Muslim and thats it. Can you please guide me as to what questions should my family ask him in order for the the nikah to be valid? Is it necessary to question his aqaaid if he offers namaaz?

Q: My question is I’m getting my nikaah done in dec and might get rukhsti in 2019. My question is how long it is allowed to keep a nikah before rukhsti any specific time period. Because I heard we cannot keep nikaah more than a year rukhsti should be done before a year.

Q: Please provide ruling on hiding the grooms shoes during wedding (Nikaah) ceremonies. Is it permissible in Islam? What are its origins? If it's not permissible then how to convince our Muslim brethren about this issue? Please provide your valuable suggestions.

Q: If wife dont want to have sex for a long time even if I ask for it (I need a boy baby). She said that I can't. Hence if I go have sex with other women to relax my feelings, is this a sin or what can I do for sex? From my side I am giving how much I can.

Q: I am married for seven years and have two kids aged 5 years and one eleven months old daughter. Whenever I seek intercourse from my wife, she declines me nine out of ten times, because she is either busy, she is tired most of the times, she is not well and that she has to take care of the children (these are the reasons according to her) and I am left being frustrated and when this kind of reasons are given I cannot oppose it and ask her forcefully. Sometimes we have intercourse just once in many weeks. I do not know what to do about this situation because it creates lots of frustration sometimes. Please help me with this. Also my wife feels that two children are enough where as I do want another child. She has refused me and have warned me as well to go leave her if I want another child. What I can do is in this situation to convince her?

Q: If a wife does zina with someone, does her marriage relationship remain the same with her husband?

Q: Why a Muslim brother is allowed four marriages and what if women married four times? Why the rules are different?

Q: Is it necessary for a girl who is suffering from std herpes to inform a potential spouse of her condition?