Can a guy with average looks get with a super hot girl just by being a nice and caring guy?

My friend is a bit overweight and is just a overall average guy, He also is one of the nicest guys youll ever meet. But hes been lonely for quite some time now, and he has this huge crush on this super hot girl in his class. She is super hot, I’d say 9 out of 10. I told him hes got no chance and that he should move on. Was I right or wrong?