Why would a guy you have amazing chemistry with after becomes cold and dry like he doesn't wanna talk to you?

there's this guy although it was only one day that night felt magical like there wasn't any physical thing that happened to us but just cuddling and everything. We even talked about deep stuff about our life, we filmed tiktoks and he said he's happy he met me because he hasn't experienced this in a while. I was actually drunk but he didn't take advantage of me, he protected me and I don't know it just felt amazing but he told me lets enjoy this night cause when i asked him its only a night thing for you huh he said "no" but he found out i was leaving that week to the philippines and said he doesn't think it would work out. after that we have been snapping and everytime i try to like start a conversation he just like says thank you or something😭idkkk can it just be one sided like was that night nothing for him i mean he must have a lot of options cause he's goodlooking but still:(

Why would a guy you have amazing chemistry with after becomes cold and dry like he doesn't wanna talk to you?
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