Should I take this as a sign to move on front my crush?

I’m aware of my crush being single. We haven’t talked yet but we have those
little moments ig? I was planning to talk to him in the future. Anyway, there was a girl at his table. Let me set a disclaimer, clearly he’s able to talk to anyone he wants but there’s really no point of me liking someone who’s interested in someone else. I was watching them talk and from what it looked like (don’t know if it’s true), it looked like he had a lot of interest in her. He also didn’t look at me at all. Should I take that a sign to move on from my crush? Before making moves on someone whose possibly into someone else.
Should I take this as a sign to move on front my crush?
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