Unfortunately, I think this guy is just looking for some action. I would suggest that if you really like him, try to keep a friendship (with no sex) going with him. If he is really interested in you, he will hang around but if it's just sex he's looking for, he'll go looking for someone else, which in turn will show you that he was not really the guy for you.
Don't underestimate what you deserve. No woman deserves to be treated like an object. Playing along is not only childish but will also end up crushing your heart.