Haha Malik come on. You cant keep breaking up with guys, unless it the same guy. Just tell him its over, you like another guy and you can still be friends.
I think that you are a very lucky girl to have a boyfriend,and if you like his friend breakup with him,and say that you are very sweet,but i like someone else. i hope this helped:)
well have a place where you can talk to him tell him the truth that you dont like him anymore and that you somebody else but don't tell him its his friend and tell him that he deserves better
Also I don't think its the best idea to date his friend or he will hate you and may tell his friend things against you.