If a girl posts a selfie on a guys snap story what is that “saying”?

This is an opinion question, i know there’s not enough info to understand the whole thing**** i have been “talking” to this guy on and off and after the 2nd time we went out he basically told me he wasn’t looking for anything more than a hookup but that he doesn’t mind doing other things....I’m assuming that means bar then bed? But he said that to me back at the end of October and yesterday he had a girl on his snap chat where she took his phone and had a filter on, then was touching her hair then blew a kiss....what does that mean?? Are they talking on more serious terms than we were?? Or just friends? I noticed when she posted it around 6 or 7 on his snap story, it was still there at 12am then when I woke up around 8:30 he deleted it...did he not know she posted that, why would he delete it? We haven’t had a convo in a month so he wasn’t doing anything wrong, I just want to hear opinions of where their relationship stands...friends, more?