<human>: Can you condense the text into three sentences or less?

I'm not really sure if this is the right place to post, but I need a little help, and I don't really have anyone to talk to about this particular issue. 

I've been sleeping with this guy for about 2-3 months, and at first things were fine. Y'know, the sex was good, we were nice to each other. However, awhile ago things started to seem different: he started asking me to stay longer after we'd fucked, being more touchy, etc. Essentially, I freaked out and started being a bit of an ass. Annnd now the assholery is mutual. 

Furthermore, I didn't realize it, but I think I've very much been treating him like...less than a person? 

I feel like I should apologize, but in all honesty, I don't know if this is all in my head or if he actually was hurt by the way I'd treated him. 

Either way, I guess I was wondering if there's a way to apologize for sort of taking out my own problems on him/not treating him very kindly in a way that wouldn't make it seem like I was trying to get too feelsy/make it too much of a big deal. 

I admit I'm attached (though I have no intention of ever asking for more), and I'd like to get to know him better, which may be colouring my view of everything: Maybe he hasn't noticed a thing and I'm being hypersensitive and silly. 

Also, just in general: what are little things that someone can do for you that makes you feel a little better, without overstepping boundaries? I really, really do not know what I'm doing and I'd just like him to seem happy around me again, y'know, laugh.
<bot>: Have been a bit of an asshole to fwb, want to somehow make amends (and generally, be a better fwb).