The guy who loves attention
Some girls love attention the same goes with guys. What happens when you like a guy who loves attention?
If you like a guy who loves attention that could be a problem. You could think that he likes you because you are giving him attention. What about when you are not around? What about when you are around and you see another girl giving him attention? He might ignore you and you will feel hurt.
If you know a guy like that let him go. A guy who likes you should focus on you and only you. There is nothing wrong with being friendly but there is something wrong a guy giving you the attention that he gives every other girl. If he is not making you a priority than you shouldn't make him a priority either.