<human>: I met my roommate online through a dating site. We hit it off on the phone and texts but in person the sparks weren't there. We stayed in touch and quickly became really close. He changed jobs and started work close to where I live and asked if I wanted a roommate.  I thought it would be cool
to have the company and extra money so I said yes. 

We have been living together for 9 months. Everything was very platonic until a few months in during a trip to Vegas when he started making out with me in my bed (we shared a room.) we have made out several times since then , about once every few weeks to once a month. It is just making out and heavy petting, some oral sex but never intercourse.  

I am confused because up until our Vegas trip he asked me to not 'cockblock' him and would make remarks about other girls, etc etc. he still makes remarks about other girls and such. 

He is affectionate at home- comes up behind me when I'm cooking, randomly tickles me in a flirty way, gropes me, lays and snuggles with me in bed. However, it seems he pauses before we would naturally kiss and leaves. It almost seems like he gets embarrassed or shy, though he is not shy. I am also baffled why we have not had sex. 

He is not dating anyone. I am not in a steady relationship, though I have gone out with other guys while he has lived with me. He seems to have been jealous of them, but again, he has never indicated he wants a relationship with me. We don't talk about our make out sessions or why he is physically affectionate. I never initiate contact with him.

Summarize the given text in a few sentences.
<bot>: My roommate is physically affectionate, we make out but we don't talk about it. We have never had sex. Does he really like me or does he just like grabbing my ass?