Im a guy with girl problems?

Ok I'm a nice guy mabye that's the problem I'm decent looking smart funny decent football player but I can't seem to win over any girls I'm nice to girls I want a relationship with then when I ask them out they say were just to good of friends I listen to them when they need it talk to them I'm a good guy I think but what can I do so they know right of the bat that I might want to be more without coming of as a pushy jerk who only wants I'm not bout the btw ya Im like a good friend random loud fun um idk I can't see what my problem is I thought mabye it's my body but idt so I'm 6'3 and 217 pounds idk brown eyes auburn hair well idk give me some help please