No. Once a woman's hymen, or "cherry", has been torn through intercourse it is very rare for it to regenerate.
It is very well possible.
no, having your cherry popped (only for girls) means having your hymen broken and losing your virginity.
If you happen to be refering to having your cherry popped that refers to the hymen, have a look
If you have two male partners I don't believe it would. Stress can cause your period to be irregular as well as many other factors but having multiple partners can not.
Having sex is a personal choice, how much in enough would be a better question. Have sex until you do not want to have sex anymore, but be sure to use protection and inform your partners that you are having sex with multiple people so they will understand both your relationship and the possible dangers of having so many partners.
For marriage (or Nikah) to possible per religion there should be acceptance of both partners of their marriage. Other things are having two witnesses on the marriage in addition to other rules per religion.
Having multiple sex partners.
It is not illegal unless you marry them both partners, this is called Bigamy.
You can but not really
your partners not showing you they care enough
People like sex so much because it is enjoyable and both partners feel good by doing it. You can even get to know each other better by having sex. Ahh... and no its not wrong to have it before marriage. If both partners want it before marriage why would it be wrong...
Being promiscuous (having a lot of sexual partners) does not create HIV - you have to be infected by one of your partners (or by some other means on transmission). The fact that you are promiscuous (have a lot of sexual partners) does not significantly increase your risk of contracting HIV. The risk would arise if you were not having safer sex with them.