Well being single, I'll mention my ex-girlfriends opinion on what was our song for a laugh. Sarah always said that "Call Me Maybe" by Carly Rae Jepsen was our song because we met dancing to it in a club xD
The closest thing to I have to a relationship right now is probably Parker, in which case the song is probably "Power" By Kanye West. Of course if you count bromance's then it's Paul in which case... Blood Brothers?