When it comes to Justin Bieber and Selena Gomez, it looks like Selena wears the skinny jeans in the relationship!

According to Life and Style magazine, Selena has laid down a series of rules that the Bieb needs to obey in order to keep their relationship on track. A source close to the budding diva tells the mag, "She told him if he messes up, it will be over. He can't have girls or models back to his hotel room. [She has] a two-week rule. They can't go longer than that without seeing each other. That means going on dates, walking on the beach, making ice cream runs and just being kids."