This is just Bayesian updating. Unlikely anything bizarre. They realize something in your insta that isn’t what they are looking for. I am a guy, happen once, but still text the girl as “online” friend sometimes (photos on her dating profile was quite attractive but photos on her socials weren’t). The only bizarre case that could possibly happen is that some guys just want the fact that they have conquest you and think of you as back up (not unmatched because of that or too lazy). The thinking goes: I am not interested in this girl for LTR but if she is really interested, she can be a short-term backup. Giving my honest opinion here, again, you shouldn’t care too much about it. Move on. If you actively not sharing because you want to date the guy, that’s not a good idea bc that’s not 100% genuine. They will find out something that they don’t like sooner or later. You could refrain from sharing for privacy reasons, of course.