I'm going to tell my friend that him revealing what I'm into to other people annoys me
It makes sense that you would be upset about that. What are your thoughts about his actions.
I'm pissed off. He has no respect for others.
You are right about being annoyed. He shouldn't be talking about personal stuff you said to him in confidence.
He says he seems no problems with it.
It's wrong of your friend to reveal your secrets. It would be best to let him know how you feel about his actions and be sure to keep things to yourself.