How to know if y’all are into eachother or if it’s just lust

So me and this guy have been having sex for awhile he joined the navy so he went to bootcamp and he got back today. We met up at his place and we had sex and after that we just sat there and talked. I put my legs on him and he was telling me how his life was going and asking about mine. We were laughing and smiling, and I looked at him and realized I want to be with this dude. We were sitting in that same spot for about 30 minutes. Then I left and went home. Ever since he got out of bootcamp we’ve been texting and catching up. It’s like he didn’t even leave for a couple weeks. Idk I have mixed emotions. The sex is bomb I could just be over thinking