what to doooo

I have feelings for this guy who's in a show with me and I know he does too. He's a lot older than me so a bunch of people think it's weird, but the two of us don't. He has a girlfriend but treats me like I'm the only girl in the world. We only have one weekend left of the show and I'm not sure if I'll see him again for quite some time. What should I do about it? I really want to go along with what my feelings are telling me but I don't know what's right or wrong