Sexy talk advice

Hi!

So I’ve been talking to this guy for a while now, he’s 22 and I’m 20. I’ve never been in a relationship before, had sex or even kissed a guy before. I’m kind of nervous because I met him on a dating app, but he seems super nice and sweet. Anyways I need some advice, he calls me beautiful, sexy, gorgeous etc... and the other night we were snapping back and forth and I was wearing this purple fitted tank. I have bigger boobs and he’s made it clear he likes girls with bigger boobs. But for some reason whenever he talks about how much he likes them, and how great the shirt looked on me etc. I seemed to have felt uncomfortable not so much because we are talking about them, but idk maybe because he’s so interested in them and we haven’t met yet. Or is it possibly the stigma behind sex, I’m not quite sure. But the funny thing is it makes me want to put more clothes on enstead of wanting to take them off. Is it normal to feel uncomfortable at first with sexy talk, I think it’s possible because I’m an introvert that I just find it out of my norm to be talking about my boobs. Anyways I’d love to hear what you guys have to say on it. I’m extremely body positive but Idk why I feel so nervous or weirded out when we talk about it. Can’t wait to read your comments!