Don't ever feel used if you enjoyed it yourself. It's an early stage. Both are trying to get a feel for each other. You go as far as YOU want to go. That way, you don't let yourself feel used. He did not force you, right?
You need to know what you want. And, go from there. If he doesn't reciprocate in a way that you want, move on. Use that energy trying to get the last word in to getting to know other potential/ meeting other people!
“Really, sex and laughter do go very well together, and I wondered - and I still do - which is more important.” - Hermione Gingold-