Am I over reacting?

So last night, I am messaging my bf on snap (nothing weird there we always have two convos going one through text one though snap) anyways, I pass out for a bit because it was around midnight I wake up 20 minutes later, I saw I had a message from him & I was just going to say “goodnight” when I saw what it was it was a video of him being out with a group of girls & one girl was hugging him, the the other girl was the one recording from the back so I couldn’t see their faces, so I asked who the girl was & he just said “having fun” at the point I started typing a messaging telling me to just be with them instead & he sent me another one saying “that was a long time ago, I just wanted to show you how much fun I use to have” I am taking it pretty bad, does that mean with me he’s not having fun? Why would he send me that? He was drunk last night. But I still feel like I should bring it up today...