She slept over my boyfriend's house

I posted earlier, my boyfriend had a girl over his place and didn't inform me until an hour before she was supposed to come. (I also was not there when she came over) I felt like I couldn't tell him I was uncomfortable because I didn't want to tell him he can't have his friend over and she was on her way. However today I told him I felt disrespected and it was inappropriate. He said he doesn't think it's inappropriate and if I wanted to have my guy friend sleepover he would be fine with it. He was unsure why I feel disrespected. He also told me today she is lesbian when he failed to tell me that yesterday when he said she was coming. What should I do (or say)? I feel like we're both in the wrong but I feel so betrayed.