Is this a thing?

Hey girls, I met this guy a few months ago. We are good friends and we hang out often. I am newly single and he has expressed attraction. Basically we still hangout and do fun activities together but now we also have sex. We both agreed we are just having fun right now. Although if he wanted a serious relationship with me I would be open to it.

Do you think this can continue to happen without a committed relationship forming?

This is so unlike me. I was in a long term relationship so 'fun' is something new to me. I do find him attractive and I would like a relationship with him if he wanted it as well. At the same time I am enjoying the fun and I dont wanna be that naive girl secretly hoping for a relationship when the feeling isn't mutual