Old boyfriend but maybe now?

About eight or nine months ago my boyfriend of two years and I broke up. We both dated people since then and things are different so maybe they could work out or maybe they still can't. We didn't have any contact during our time apart except we told eachother happy birthday on our birthdays. He reconnected with me and we've been hanging out non stop for the last few weeks and I just need to know how to bring up what are we doing? We haven't kissed or anything and I just find it strange to resurface all of this if were just going to be friends.

So any ideas on how to bring up the topic of why are we hanging out and if he still has feelings for me?