How should I go about this?

So my "bf" and I don't have a connection anymore and of course I will miss him and I did hope we'd be soulmates (we were engaged at one point) anyways.. he likes another girl, I saw on his search history and on Facebook.. He didn't cheat I guess but he's been watching a lot porn since we started living separately plus he did try talking to her. Well also had a talk about how we (he) didn't believe in commitment and love. Therefore he admitted to not being into me anymore I suppose, yet he's still with me for some odd reason. I am at his house and he says he'll take me back to my aunt's house tomorrow bc he works the next day. So what I'm getting at is should I tell him I know about how he's only with me because he couldn't get that other girl to talk to him or like him or whatever or should I wait till he drops me off tomorrow to prevent things from getting awkward. I'm hurt but I'm going to keep my cool and just tell him I know and I don't think we should hang out again.. How should I go about telling him? Now or tomorrow when he drops me off?