Is it possible a guy who came out as gay at 17, could have a crush on a woman when he’s 28?

There’s this guy he stares at me a lot and checks me out and we exchanged a few moments but I went on his page and it says he came out as gay at 17… I don't know why he keeps checking me out and stuff then :/ is it possible he maybe is now bi?

Is it possible a guy who came out as gay at 17, could have a crush on a woman when he’s 28?
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