Various masaail of Nikaah

Q: Alhamdulillah, twelve years back, I got married. At the time of marriage my intention was not to take any jahez (dowry) but one of my parents asked for basic materials like bed, furniture, house hold items (not big items). My intention is now to return the amount spent on those items to my father-in-law. 

My question is: Can I give my father-in-law the suitable amount? Shall I ask my parents about this? Or is it not required because the above items will be the milkiyat (owner) of my wife?

Q: Is that person sinful who does not marry in this world if he/she does not find someone as relgious and God fearing as him/her in this world and wants to remain unmarried to marry somone very pious/God fearing in the Hereafter because a more religious/God fearing person will have better rewards in Paradise and would share them with his/her partner.

Q: If you see the signs of the curse of Allah Ta'ala on someone where they are unable to make duaa and you know he isn't a good person but hides it and pretends, what do the teachings say in breaking up his marriage and removing the wife from this ordeal?

Q: How much should someone love his wife?

Q: Is it permissible in Islam to go on tours and outings along with your partner after nikaah but before rukhsati? If no! Then what acts are to be avoided with your partner when one is married and did not get rukhsati yet?

Q: Allah created both men and women differently such that a woman does not naturally feel to have more than one spouse at a time.

1. My question is that if it was in the nature of a male to have more than one wife as created by Allah then why are there naturally the feelings of jealousy or insecurities and intolerance that a woman feels about it? My mind and heart both know that Allahs plans are the best and I blindly trust in them but then why I feel annoyed and really bad about the fact of sharing my husband with someone else. I even feel annoyed when my husband teases me about angels of Jannat? Why has Allah put this feeling in us knowing the natural tendency of males? 

2. Though I know that there is nothing wrong in having more than one wife but I still feel uncomfortable and jealous about this fact. I would never be able to stand the fact of my husband marrying someone else. Does that mean that I am not a good believer as my husband constantly keeps saying that if I cannot tolerate the fact of my husband having another wife (suppose) then I am not a good muslimah. Is that so?

Q: I am in love with a non-Muslim. We both want to marry each other. I know that nikah is the only way out. But I want to know if it is halaal for her to accept Islam for me.

Q: How much should one love his spouse?

Q: Is there a reward for a woman whose husband has taken another wife?

Q: My husband did not touch me for the last 2 years even though we are living in the same house with 2 kids. Is our marriage still valid?