Hooking up with an old fling and catching feelings

(25 F) So back in January, I met this guy who lives in my building. We hit it off and hung out a couple of times and then around a month later we slept together. Following that, another man came into my life the same week and I unfortunately and immaturely decided to ghost the first guy (felt I had a better connection elsewhere). Fast forward to the begging of March, certain circumstances put me and the guy in my building in the same situation many times and we start to reconnect and then eventually start hooking up. Sex is great. Here’s the problem… I catch myself wanting more of a connection but I don’t know if it’s ever going to be reciprocated and aimless hooking up gets old for me after a while . I also don’t know if i messed things up (he told me he’s trying to give me more space this time because he thinks that’s why I stopped talking to him the last time). What do I do/what should I say to him?