When you have sex with the person you really want to be with rather than settling for sex with someone who possesses similar traits or features (pandora-ing).
Based on Grooveshark. the online music streaming site where you can hear the exact song you would like to, rather than someting "similar" (such as Pandora).
"Adam lost interest and I started having sex with someone similar because I missed him. Then, the other night he called me and it was total grooveshark until the early morning. Yes!