Is he still interested in me?

I have been talking to this guy from the gym for several months now and I thought he was interested in me but lately I’ve noticed he doesn’t talk as much and isn’t as flirty. He used to ask things about me and seemed really interested in what I have to say but now it’s just casual conversation. When we first started talking I hurt my arm and was wearing a brace and he would say I don’t want to look all cute wearing it and how tiny I am. One day he said how nice my hair looks I told him I was meeting a friend and I think he assumed it was a guy I was meeting because he asked me how it went the next day but since then he’s been less flirty I don’t know if it’s he’s not interested or things I’m not. I don’t know what to do.

Is he still interested in me?
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