When a guy you like says, "there are better guys than me out there" what does it mean?

So I complimented a guy I currently like a lot by saying that he was one of the nicest and best guys I know and he responded by saying "you'll meet nicer and better guys than me when you go off to college" (I just graduated while he's going into his senior year). My question is, is he saying this because he's not interested in me and wants to point out that there are other guys, or is he trying to see how interested I am in him by seeing what my response would be?
When a guy you like says, "there are better guys than me out there" what does it mean?
Post Opinion