I want to tell my boyfriend that I'd like us to go on a break when he gets home from his friend's bachelor party weekend tomorrow
Why do you want to break up with him?
He wont be able to truly love me until he divorces his wife
It is good to be open and honest with your partner if you want a break. You should also not date married people.
Even if we break up, would you want to be friends with me?
Yes, I will still be friends with you. You just need to not date married men.