I'm going to immediately rebound with a friend after my boyfriend cheats on me
That's a little extreme, do you really want to do that?
Maybe I do want to try to avoid this and do something else.
If you expect your partner to cheat you should just break up with them. Relationships with friends can get messy and ruin the friendship.
I don't care. I need to get my mind of this.
I know you're really conflicting, but I believe you should just take a breather from both of them and sort your mind out. You don't want to make any rash decisions, because it can change the course of your relationships and friendships forever.