How do you know when a fwb is turning more than a fwb?

I’ve been constantly talking to this guy I met in December. We’ve been recently FaceTiming every other day for a couple of hours. He starting to open up and talk about family things and what not. He mentions things like “I don’t think we just a regular fwb, we care about each other and we talk often. We don’t just hit each other up for just a hook up session” he mentions other things like he recently said “do you think I’m boyfriend material because I haven’t had a relationship since I was 19 (now 25)” also but I don’t know if it’s to gage how I’m feeling about him or what.

Maybe I’m just reading too much into it I don’t know 🤷‍♀️🤷‍♀️🤷‍♀️