While I would originally haven given you the advice of just seeing him less frequently and see if that reduces the arguments after reading Cryptonia's post I can see how that would annoy him more if he didn't know why. That leaves you with 2 sensible options I guess. Either tell him how you feel and take it from there, or tell him that you need some time alone to think about your relationship, optionally telling him that he's hurting you. Do not go for the "well if you don't know why then I guess you don't care" I find myself getting highly annoyed when someone does that to me.
I really wish I could give some concrete advice here but I must admit I've never had this happen to me so I'm just going with what I think are your best options. Combined with the fact intp's are not naturally proficient at relationships you're setting yourself up for some high quality advise here ;)