Boyfriend problems

Ughhh just need to rant real quick... so my boyfriend and his friends are out at bar which is totally fine. And his best friend puts a Snapchat story of him dancing with some girl... when I saw it it was from 40 minutes ago. so I text him and I’m like aww cute you dancing with some girl (sorry I’m snippy) and he wants to play dumb and act like he doesn’t even know what I’m talking about. Then tells me what bar he’s at and that it’s not a dancing bar. Which let me remind you if this was the other way around he would be furious beyond belief. I just don’t understand. He just got done telling me earlier how much he loves me and he sees us getting married. Like what the fuck. Sorry but I’m just starting not to care anymore. And it’s sad and sucks. 🙃