My Co-worker crush got touchy feely while drunk… What to make of it??

I’ve been crushing on a temp employee at my office, but I have never dated or had and romactic relations with a co worker before. My workplace is a very chill environment, very creative, friendly and at times very inappropriate *lol* (but we all can take a joke). So there is a temp here who I’ve had my eye on, but even with our very relaxed work environment he hasn’t really made a full on move (probable because he is a temp and fairly new).

I did notice though at meetings he will usually sit next to me, and he lingers in the break room if I’m in there as well although he’s pretty quiet and doesn’t initiate much conversation other than a passing “hey what’s up” or “how’s your day going?”. I didn’t start entertaining the thought of him possibly liking me until one office happy hour event he asked what I was drinking, so I offered him my cup (opposite side of where I put my mouth on) and he turned it around and took a sip right on the place I was drinking. My only thought at the time was hmmm…ok. but as the night got later I was the first to annouce to leaveand before I knew it he had grabbed his belongings and was taking off too. So THEN my thought was “ooook, coincidence we are leaving alone together??”

At out last office happy hour we all we’re getting tipsy, and as the night progressed it went from him standing very close to me (brushing arms) to putting his arm around me, to drunk dancing on me and finally again I decided to take off and leave, I was going to say by to him but noticed he was on the patio talking on the phone. I had my stuff with me so I just turned and proceeded to leave without interrupting him, and as I was saying bye to a few other co workers, I saw him rush past me to go get his stuff. Right before I made it out of the crowd he came up behind me and put his arms around me and asked if I was taking off and I said yes and then he gave me a HUGE long kiss on the cheek. Definitely not just a peck, like he PLANTED one on me! Then he said “come on let’s go…” Lol if only some of my co workers did happen to be in the elevator at that time I probably would have capitolized on his being wasted and got a real kiss from him. *hehehe*

So I’m sure come Monday everyone will be back to normal and act like nothing happens (probably because they wouldn’t have remembered), but IDK what to do about my crush. Should I act like nothing happened or should I start flirting with Jim? Or just play it cool and tease him about it a little bit so he knows it’s ok? Help!