Crush on a stranger, what should I do?

So there's a rock club in my city, it's the only one where I live so it has a lot of people who come there regularly

I was looking at the website to look for concerts and I was looking at pictures from past shows and I saw a guy who looks 100% like my type and now I have a crush on this random stranger lmao. He looks a lot older than me though, he may be like 35 and I'm 20 and in these pictures he's talking to some woman I don't know if it's his girlfriend or whatever

I'm hoping it isn't and that maybe I'll see him at a show one day but I don't know what I should do then. I know I look good and men hit on me a lot (always the wrong ones though) but I'm very shy and I also don't want to bat my eyes at some possibly taken guy. What can I do? If he even comes back there lol.