Are there any signs to look for? Not all guys are confident enough to just tell you.
Most Helpful Guy
Look for him watching you or looking at you, and, if you can, see HOW he looks at you; Does he seem interested in you? Like he likes looking at you?
If you are friends or in common social contact somehow, then he might try and sit/stand/be closer to you. Obviously, be on the lookout for things like smiles or unrequested compliments, and see if he does things just to be near you, like walking the long way home or waiting/taking a long time, when he doesn't have to.0