Please help it makes sense

I thought this guy really liked me(he claims to really like me) but he did the typically perfect guy then withdrew. He keeps coming back when I leave trying then breadcrumbs me and provides a false hope of more.

I’m upset because I was ok with the FWB but he claims he wanted to be special and in my life and briefly acted like he wanted more. I was ok with that but he started treating me like a booty call only and started only contacting me at the night for sex. I was disappointed but adjusted; I was ok with it(again) but I didn’t go out of my way to only fulfill his needs and only met them when it was convenient for both.

I’m pretty upset because I’m down to give him what he wants with whatever but I just want to be safe emotionally and sexually. However, he gives me unnecessary mixed signals. And sometimes I think he gets jealous (unsure if it’s an act). I assured him that it ok if he’s not that into me or just wants a rebound or whatever but please be upfront. He keeps saying he doesn’t want to force things and let things grow organically but I don’t like that ambiguity. Could he get off more on playing with my emotions than just sex? What’s the deal? why would a guy put me through an emotional rollercoaster if he isn’t THAT into me and I’m still giving him what he wants?

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\—I walked away because I felt this was unfair and kind of mean rather than someone only just needing his sexual needs fulfilled. However, I would like to know if anyone understands this behavior. I’m healing and learning from this experience but I want to know what is his deal (possibly) and im sure hes not going to tell me