Am I irrational?

I get irrationally angry and I know it so I try to keep myself in check. But it's hard.

I'm in the best relationship I've been in and I don't want to mess it up but I feel so nitpicky and I just want a second opinion on this situation:

My boyfriend is overprotective and clingy and I don't mind too much for the most part. He always wants to know where I am, what I'm doing and who I'm with. He's worse than my father was and we're working through this.

BUT.

He never tells me where he is etc. I'm currently in Key West for work and he's still in California. His work friends invited him over because he's "sad I'm gone" no big deal, it's a girls house but there were predominantly guys there. He stayed the night and I didn't find out until the next morning when he said "her name" is making us all breakfast. I was a little upset and he knew but I got over it, but what he didn't tell me was they stayed the entire other day and next night. He always wants to know everything about what I'm doing but can't mention that he stayed at some girl I don't knows house the entire weekend? I felt disrespected. He can't have the courtesy to tell me where he's sleeping? It hurt. Am I over reacting? I know I do that sometimes and I so get jealous easily and he knows this.