Uhmm what does this mean?

i work with this guy and i think hes pretty much into me...we didnt kno each other in the beginning, but all of a sudden one day at work he said goodbye to me, and when i thought he was just giving me a causal hug he started kissing me on the neck, i pulled him away and that was that and the next week he did the same thing...he stopped eventually, but do u think he was into me if he did that???