My crush mugged me off, and now his cousin keeps staring at me and smiling at me?

I liked this guy at my gym co-ed fitness classes. We talked a bit and flirted for months but we were both too shy to do anything about it. There were also gaps in between when we would see each other of weeks at at time, as my schedule can get hectic. Recently, in a couple of the classes, he's shown interest in another girl, they've paired up in the class, and I can see them flirting and he's stopped talking to me. (Fair enough, we didn't talk that much anyway, and he's moved on).

The thing is now his cousin has suddenly appeared as well in the classes I am in, and he stares at me and smiles at me, and is watching me, works out beside me out of all the space. I have seen him before at the gym coming to and fro from classes, and he would spot me and smile to himself but I didn't really think anything of it, except maybe my crush had told him about me. I initially thought oh his cousin is interested in me, but I looked him up on social media and his profile picture is him and his girlfriend... although the pic is old like early 2021 and he hasn't been active on it for almost a year... so maybe he just forgot to change his profile photo?

My crush mugged me off, and now his cousin keeps staring at me and smiling at me?
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