yes god will forgive you!
If you can forgive your sister, you can forgive your boyfriend. It doesn't necessarily mean that you should stay with your boyfriend. Cheating is cheating and if that is not acceptable to you, you should find someone who will respect that wish.
You either forgive her or leave her.
this is coming from a guy who has had many relationships and if someone is cheating at all you should leave unless there is children involved then it is different.
No. Get away from cheating drug addicts you're better then that.
First ask yourself if you really want to forgive her.
he's not cheating on her, but if he was she'd probably forgive him as long as he doesn't do it again.
Yes, he can forgive if he truly loves her. You might be able to start a whole new relationship.
Definitely not. If your fiance is not sincere with his apology, there is absolutely no need to forgive him or her. You may leave him if you wish.
Forgive and forget !
That is a decision only you can make.
Yes you can. Forgiveness is part of every true relationship.