Why was he doing this?!

Well, I was at this carnival place today, and this guy was on the bumper cars and my friend and I kept walking past it. And everytime he’d bump into something he’d look at me like, “I’m so embarrassed” and I just smiled at him. Everytime I passed by he’d discretely look up, but I noticed.

I’m assuming it was looking at my friend, but I dunno.

What do you think he was doing? What are signs a guy is into you or are checking you out.