18. You want to keep your major-league love life private? A good way to start is by not dating the drug-using, foul-mouthed singer of a girl group. Los Angeles Dodgers slugger Mike Marshall did not heed this advice when he shacked up with the Go-Go's Belinda Carlisle in the early Eighties, and after their breakup her lips did not stay sealed. \"I used to do blow in my walk-in closet while my boyfriend was sleeping,\" Carlisle said in 1997. \"Mike Marshall from the Dodgers, that horrible baseball player. He was a turd anyway . . . Hanging out with those Dodgers' wives was so not me . . . Thank God I f**ked around!\"