Should i leave him or work things out.

Me and my boyfriend have been together for 2 years it was going so well but we started arguing around November of last year so we broke up for a couple days not really a break up but a break and he got dating apps and started swiping up on girls things saying there hot all this well my friend seen him on there and i checked it and that’s when i seen the messages i confronted him and he said it wasn’t a big deal because they didn’t answer. I decided to let it go bc we were on a break and we got back together, in February i found him swiping up on half naked girls on snap calling them hot and i texted one of them and she said he sent her nudes and he said he didn’t but he said we were broken up but we weren’t i don’t think and if we were we only do for a day or 2 and it happened very few times. I’ve never seen for him to ever cheat which is just shocking he tells me he would delete socials and everything but idk should i leave or talk about it and see what he’s not getting outta this relationship.