Alberto E. Rodriguez/Getty Images
Billy Corgan and Tila Tequila
Who knows how long they dated or how serious the relationship was, but there's no doubt Smashing Pumpkins frontman Billy Corgan and reality TV star Tila Tequila went out once or twice. The two surprised rock fans when they attended Bravo's second annual A-List Awards in 2009, but stopped seeing each other soon after. By the end of the year, Corgan had moved on to dating Jessica Simpson.