Donell Jones has a song called "Cool On You"
"Cool On You" means that he passes on the girl that cheated on him if she were to try to get back together.
You've heard
people respond with "nah, I'm cool" before right?
For example if someone asked "wanna jump off a bridge? want some of this jalapeno? want me to try to hook you up with that fat girl?" some
people would answer "nah, I'm cool" or simply "I'm cool"
which is another way of saying "I'll pass"
"want to go smoke some
bud?"
"nah, I'm cool on that"
so if a girl ever asks you
something like "do you like me? do you want me?" etc
if youre not feeling her you can say "I'm cool on you"