my boyfriend does things that bother me every week?

so my boyfriend of 2 years does things that annoy me alot, every week is this even normal or is it a sign we are t right for each other? but also recently he went on a school trip and when I was on Twitter I saw a conversation with some girls and him and he later told me 4 girls snuck into their room to play uno. He didn't really tell me anything about hanging with them so I was annoyed and told him about it, to which we sort of sorted it out and then I found out from the girl that he had told her about me getting pissesd off about it, I feel disrespected. Am I over reacting?