The sexual equivalent of heartbroken. "Heartbroken" denoting being in love or at least having some sort of emotional attachment to a girl and being rejected. "Dickbroken" denotes being incredibly physically attracted to a woman and before any sort of relationship or emotional attachment occurs one is rejected.
After spending the night gawking at her incredible ass, I finally went up and introduced myself. She rolled her eyes and walked away, I was utterly dickbroken.