Was it just a kiss? Please please help!?

A guy at work who I have been fond of for a very long and I went for a drive on Tuesday and ended up kissing more than once. he have it all the sweet talk and said how much he liked me blah blah blah...BUTTTT, a few months ago we sent flirty messages back and forth and went out but nothing happened only to find out he had a girlfriend?? so he led me on and then dropped me like a hot cake....we stayed friends, but now hes single this happens?!? was it just a kiss or more? I definatley have feelings but he has just come out of a long relationship? whats going on? At work today we didnt talk about it, only briefly seen each other and it was all smiles and work chit chat? please help xxxxxxx