should I be concerned?

Caroline • •And in the end the love you take is equal to the love you make• 🤘♐️
I've recently started talking to this new guy who I've always been acquaintances with, but then we expressed physical interest in each other. We've been talking for a few weeks now, and conversation was always about sex, I initially thought this was gonna be a fling or friends with benefits, which I was fine with. But as we've progressed our our conversations have become more romantic and planning for the future. We went on a date Saturday night and it went pretty well, we hooked up and cuddled a lot before and after. But now the flirting has decreased; we still talk to each other all day every day but it's just platonic talk now. Has he lost interest or am I overthinking? I'm open to a committed relationship or a fling w him, I'm just not sure abt if he's still interested in me 😁