We doubt Casper Smart is cheating on Jennifer Lopez.
Why not? We present the following music video as proof.
It's for the track "First Love" and it features J. Lo sizzling in a desert location.
Rolling around on the ground in a revealing bathing suit, the American Idol hottie romances a mystery man while singing:
"I wish you were my first love because if you were first, baby there would be no second, third or fourth love."
Seriously, who would cheat on this?!? Be amazed that Lopez is 44 years old now: