There are a few things you could do to check if he likes you:
* Talk to him. This is the most direct way to find out how he feels. Ask him if he wants to hang out sometime, or if he's interested in doing something together. If he seems enthusiastic, that's a good sign that he likes you.
* Pay attention to his body language. When someone is interested in you, they often display certain body language cues. These include: making eye contact, smiling, leaning in, and touching you. If he's doing any of these things, it's a good sign that he likes you.
* See how he acts around you. If he seems nervous or shy around you, that could be a sign that he likes you. He may also try to impress you by being funny or showing off.
* Ask your friends. Your friends may have noticed things about his behavior that you haven't. They can also give you their opinion on whether or not he likes you.
If your friend danced with him at the dance and didn't know if he liked you, it's possible that he didn't give her any clear signals. He may have been nervous or shy, or he may have been trying to play it cool. If you're interested in him, you should try talking to him directly to find out how he feels.