Katy Perry is rewriting the romantic rulebook for her latest run with John Mayer -- and it looks like the third time may be the charm for the couple.
A pal of Katy's tells Life and Style that she's given Mayer some simple-but-firm guidelines to follow if he wants to keep her happy. The insider says rule number-one is “Getting rid of his old girlfriends’ numbers and no more texting them...John had tons of random girls texting him when he was with Katy before.”
Also high on the list? "Katy wants more dinners and date nights, and for him to be more romantic with her."
So far, it's been working. They've been seen canoodling all over New York and Los Angeles over the past few weeks.