Boy confusion

Ashley

So there was this boy I really liked for a long time. We had become good friends and then (I guess maybe after he saw me hugging another friend that’s more like a big brother to me) he suddenly stopped talking to me as much. Then he started talking to me and I found out (through someone asking him) that he had a girlfriend. I was kinda heartbroken so I stepped away a bit bc I had been flirting with him and he with me a little bit but he had a girlfriend and I didn’t want to mess that up. Anyways we would talk occasionally but eventually we lost all contact. We didn’t text/dm/snap each other at all anymore.

Suddenly, on Monday, he snapped me again and now he’s snapping me everyday and I’m just confused bc I literally haven’t seen him in like three to four months until this last week at a student conference. He would wave to me whenever we passed each other and when our hotel flooded he sat next to me as we waited for someone to pick us up (all the students at the conference stayed in a hotel and were taken in a bus) and then later he would let a girl I used to be friends with rest her head on his shoulder and she flirted with him and he seemed to kinda flirt with her back. I’m assuming he doesn’t have a girlfriend anymore bc I don’t see him as the type to deliberately let a girl flirt and touch him when he has a gf already.

I have confused right now, please help!