Answer
If you chose to be with this person in the first place and now your friends may be questioning your choice of boyfriends, don't listen to them. He was your choice, not theirs. You must have had a good reason to go out with this person in the first place and call him your boyfriend. Why not stick with him if you love him for who he is.
if your boyfriend has bipolar and doesn't want help you still might need to tell someone close to him or a parent to help but you also need to talk it through with him also and see what needs to be done
Depends on how he treats you
probably not
you should make a decision whether you'll go or stay with your boyfriend.
No, you should not. Just move on.
If you trust him you should.
no
dump your boyfriend n go out wit luke
stay with him forever. its his way of showing that he loves you.
No because whats a the point of having a boyfriend
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 should ditch him.