Friend group situation

Hey ladies. So i have a large group of friends. My best friends fiance has a large group if guy friends. So when we go out its usually just us two and a bunch of guys. Anyway there is one guy that i usually spend the night with after drinking. We've never had sex but we've made out and fooled around. A few years ago we were texting alot and trying to make plans to hang out but they never ended up happening so the texting kinda fell through. So anyway we all went out Wednesday. We were dancing flirting he got alittle mad when i was flirting with other guys. We were drinking alot. Anyway i had to sit on his lap in the car and he fell asleep on me. And his best friend was basically like you spend the night and ill drive you home. And they were calling his name in the car and his best friend was like no louis is cuddling right now. And we went and slept in one of the twin beds. We fooled around alittle but i had my period so we just snuggled all night. But he was talking about hanging out again...so my question is should i send him a Facebook message like "hey if you wanted to actually hang out heres my number" i just cant tell if hes actually into me alittle or just fun to snuggle and fool around with when drunk. Also i dont wanna ruin tye friend group we've got going on. Sorry its so long.