Are Parents to Blame When Teens Get Pregnant?

Is cohabitation the precursor to teen pregnancy? Last night's episode of MTV's 16 & Pregnant followed Megan, 16, and her live-in boyfriend Nathan, 19. The couple conceived their baby while living under the same roof, since Megan's mother allowed Nathan to move in (because he was arguing with his own parents about playing video games) while her husband was stationed in Afghanistan. When Megan's father came home on military leave, he voiced his disappointment that the parents-to-be could no longer be kids. That said, isn't it rather adult to allow two teens to room together?Photos copyright 2010 MTV