no
you should marry someone because you love them
I'd say this is a big no-no unless you are friends with the husband as well and he understands, if this is so a simple friend hug will work.
Yes!!
If you trust that your friends will not tell anybody, then go for it!
someone you like and can give you happiness and loves you
If I don't want to be friends with someone I simply avoid them if I can, or just politely ignore them if i can't avoid them.
You should never move in with someone if you aren't married.
NO BECAUSE THE MARRIED WOMEN CAN REALLY BE FAITHFUL TO HER HUSBAND
Lives and friendships do change when someone is married however, they should still be able to converse with you and possibly get together once and awhile. If this is not possible spend more time with your other friends although they cannot replace this other friend it is time to move on. Friends will unfortunately come and go throughout your life.
A certain someone can unfriend friends who have inactive accounts on Facebook. It is a matter of personal choice.
Pregnancy is never a good reason to get married even if you are friends. Let it take some time and see if it works. Your lives will change as soon as you are parents and you can never imagine what that will be like. Also as married you might love each other as friends but will have to leave the idea of romantic love and being in love with someone forever behind. For the child's sake you owe yourself and him/her to give it a good and fair chance and rushing into it wont do that.