Should I Tell Him I Like Him?

So since March I've been dating a guy I was set up with by my Aunt and Uncle and their friend (the guys older brother). I really like this guy, and over the past few months we've held hands, hugged, cuddled, texted, hung out, gone on dates, etc. Last night I was at his house and while we were talking he brought up the fact that his friends have asked about me and apparently at his basketball tournament, when we walked into the gym and went to sit by them, they all clapped for us. (I didn't notice until he told me later... Yes, I'm oblivious.) ANYWAY... so he admitted to us "going out", meaning we're dating, but not together, per say. So, my question is... should I just tell him I like him next time we hang out? I kinda need help... (: