Pop queen and SEX author Madonna is so frightened boys may lead her 10-year-old daughter astray, she's banned dates until LOURDES is 18. The PAPA DON'T PREACH singer has spoken in the past about her strict parenting regime with husband Guy Ritchie, but now she's laying down the law even more and forbidding dates until adulthood. She says, "No boys for her (Lourdes) until she turns 18. She's a good girl, though. "She doesn't have it easy. Late night TV, junk food and mess are not tolerated in my house." Lourdes is Madonna's first child with actor/fitness instructor CARLOS LEON. The pop star is also mother to her son with Ritchie, ROCCO, and adopted Malawian tot DAVID BANDA.