What do I do?

My boyfriend and I were on the verge of breaking up last night. We said we were on a break but then he was like no we are broken up. But then after that said he wouldn't do anything to harm us ( still on relationship terms, not acting single ) and then I find out he had a girl over (had all the boys over too) but I've been told he got with her. I don't know what to do because he messaged me last night saying how much he loves me and misses me and doesn't want to break up ever. But I don't even know how I feel. I'm emotionless and before I was told he got with the girl, I said to him yeah we are back together. Because he asked if I still wanted a break and I said no.

I'm going to meet him today to talk about things but what if he lies to me and says he didn't even see a girl ? ( I know 100% he did )