couples counseling?

my boyfriend and I have been together 6 months and he's been having some issues trusting me and giving me privacy... he gets stressed about school and takes it out on me, which ends up in a huge fight because I have a short temper when it comes to being accused of hiding things... we have been on the verge of breaking up a few times but we love each other and keep trusting that we can work through these things. we got in a huge argument last night and today he suggested couples therapy. at first I was turned off by the idea because we shouldn't be having these issues in the first place, but now I'm thinking it might be a good idea. my question is, if we've only been together 6months and having these issues, would counseling help? also how much does it cost?