There are new reports out that one of the driving forces in the breakup of Justin Bieber and Selena Gomez was a sexual romp he had with a 22-year-old nursing student. The woman told Star Magazine that she was hanging out with Justin and his friend and rapper, Lil Twist, on December 21. She claims the three went to a shop in Hollywood and purchased marijuana and then went back to the Four Seasons hotel where they smoked and Justin drank the chemical concotion know as "sizzurp" throughout the night. After that she claims they went back to Justins house where he was "romantic" and held her hand. Eventually they did the deed and she left. No wonder Selena is done with the Beibs!