I'm going to tell my boyfriend hes being rude
Why do you need to tell them they're rude?
My boyfriend always likes to prove me wrong
If you and your friend do not get along then it is best not to be friends anymore. You would be behaving rudely if you confronted your friend and picked a fight with him over something so petty.
Maybe but I will say it anyway.
I still believe this is something you should keep to yourself. If he is really bothering you, perhaps you can bring it up nicely so he won't get offended. Don't you want to have a smooth relationship together?