I think my FWB may have actual feelings for me

He comes over and it isn’t just sex once and he leaves. We will lay in bed and talk for hours before we even get sexual. Even after sex we go back to talking. We have put on so many movies and we haven’t paid attention to any of them because we’re too busy talking. He remembers every single thing I tell him about my life. No matter how boring. He listens intently when I’m telling a story. He asks me questions that are open ended. We talk every single day without fail. When he comes over he doesn’t leave earlier than 2 am. He bathed me in the shower, cuddles with me for hours and then says things like “this is the longest I’ve ever cuddled anyone”. He told me that seeing me upset and almost in tears in our convo in person made him feel bad. He stares into my eyes and compliments me constantly. He wants to know every single thing about me, my past, he validates me and even shows empathy.

He remembers my birthday, small I know but even guys I was with for years wouldn’t make it a point to remember it. There’s just so much here that’s so different from my other FWB. I don’t mind, I’m just wondering if this is just how he is or is he truly falling for me? I guess I should just ask him, and I will. Just would like to know you ladies thoughts on this. Usually my FWB are strictly sex and no cuddles or talking about deep stuff.