Am I being played ??

I just found out a guy I’ve been talking with is talking to another girl. She has pictures up of them on her Facebook and everything. I confronted him about it and he said that those pictures were old and he’d tell her to take them down( They were posted 2 days ago) He says that they aren’t together and they’re just friends. She took them down, but I told him I don’t wanna mess with a liar. He told me he doesn’t need this and to have a good one. Should I believe him? Should I message him ? What do I do ???