<human>: Condense the text into a few key points

I need some tough love. Been together 2 yrs.

My SO and I have talked about this, yet I still can't put it off of my mind and just let it go. 

I had to do some traveling for work and he went out drinking with his friends a few nights. Well, one of the nights, we said goodnight and I asked him to text me when he gets home so I know he's safe. Well, he never made it home, spent the night at his friends house, and never bothered texting me.

Needless to say, I was upset because I specifically asked him to. Turns out, his friend brought some girl home and she had brought this other girl with her who my boyfriend was talking to at the bar. He said that she had a boyfriend who was there, but her Facebook says that she is single. He said that the girl didn't come back to his friend's house, the girl and her bf left the bar. He added her as a friend on Facebook, which is really weird because he never adds girls he met for the first time. This girl is really attractive and is a model. I asked him why he added her, since they don't know each other and would probably never meet again. He says he doesn't know why, he was drunk and claims to not even remembering adding her.

I was really pissed off, because I also found out that he had been lying to me about porn and had been watching cam girls throughout our entire relationship. I only found out because I felt like he was hiding something, he would always get angry and defensive when talking about porn. This all happened within a 24 hr span. I had forgiven him about the porn (wasn't paying or interacting), but for some reason, this girl really bothers me. He claims to not know why he added her, but remembers the rest of the night. He was also mad at me for going through his computer. I don't want to keep bringing it up and opening up the situation because I want to get past it, but my mind keeps going wild with all the possibilities. Am I being crazy/insecure?
<bot>: SO gets drunk, doesn't text, adds suspicious girl on Facebook, can explain why he added her. Am I being crazy?