It sounds like he should be seeking counseling if he isn’t already doing so. In my opinion, you haven’t been together long enough that you should feel like you really have to stick around and work through this when he’s not putting effort in. If you’d been together many years, I’d say get in couples counseling as well. Since you haven’t been together a really long time, it’s really up to you if you think the relationship is worth going through that work. You’re both very young. Not every relationship is worth going those extra miles to try and save at your age.
The casting choices are really questionable here. Looks like the casting was done to bring in a generic movie going audience that watches movies based on the cast, but this was only going to succeed by appealing to the actual fan base. Jack Black and Kevin Hart don’t need to be in every movie. I’m surprised Chris Pratt isn’t in this honestly.