Nikaah & Marriage Issues

Q: One of my friends got married with a women and later he knows that she is already married but she is separated from 2 years from her husband but not divorce. So now what he have to do?

Q: What will be the effect on the Nikah if a man has a relationships whith his brother's wife in his brothers absence and what should they do to be forgiven by Almighty Allah.

Q: Due to physical illness I (psychiatry disorder) lost my physical desire. I am 20 years old and no one knows in our house that I lost my physical desire. So what order of parda is implemented on me for my non muhram. Should I observe parda from them now as I observed parda from them in the past?

Q: I have a question that confuses me often. I have read in the Islamic books that women is created from the left rib of the men and therefore matches are made before a person comes to this world. This means that each man and woman on earth has a match. Then what about the man who never gets married or women who never gets married when they have their match in the world. And if a person does not get married, what about his/her destined match? Does his match also does not get married? And those who pass away as a bachelor, does his women never gets married, as a person only gets married to those with whom they are destined to be with.

Q: I'm proposed and the date that has been set for the nikah has a high possibility of coinciding with my menses. What should I do? I'm so confused. Please advise me.

Q: I want to understand the shariah way of performing nikaah of a girl and a boy. There are too many customs prevailing among Muslims of different region and everyone claims that theirs is the correct way. Please guide.

Q: What is the right way and the way of Allah's pleasure to a marriage ceremony? My sister got married in a mosque and we fed the closest family members. Even our closest neighbours weren't invited and they are hurt by it. Is it the saheeh way?

Q: Can husband and wife take gusal together?

Q: I'm a twenty two year old female, and I have met someone I am ready to get married to. Alhamdulillah he is an Aalim and a qari. My parents, on the other hand don't want to give it a chance. They refuse to even meet him. I don't know what to do because I just have positive thoughts about this. I acknowledge that meeting him out of nikkah was wrong but I just want to make it right. Please advice. 

Q: A Muslim guy approached me and proposed marriage. I explained it to my parents and they asked me to invite him to the house, he told his father but his dad rejected me saying he wants his son to marry a daughter of his friend or else he will disown him. Will I break relation or I pray to Allah to have the guy back or what should I do? I am really confused.