Idk where it’s going anymore

Tl;Dr I dont know how to continue with the relationship I formed with a former coworker

So I(20f) started talking to this guy(23m) I used to work with. We’ve been talking on Snapchat nonstop for about a week. It started with us matching on tinder and then he ended up telling me that apparently I was one of his favorite people to work with and that he kind of liked me. I ended up telling him I also liked him And we’ve been talking since.

I didn’t think anything he did was a red flag but a couple nights ago he showed me a whole new side of himself, complete with pictures, and has been texting me less and less since.

Ive been dealing with relationship trauma for a while and this change has me overthinking about if he just wanted something physical.

He’s one of the only guys I’ve ever not been able to read and I’m so lost. I’m trying not to let the trauma control my emotions but I don’t want to continue the pattern.