Now that Katy Perry and John Mayer are back on again, the 'Fireworks' songstress is laying down some ground rules for the 'Paper Doll' singer-songwriter. If he wants to date Perry again, he's got to follow some dang guidelines!

According to Life & Style, a source dished that the first of the rules is, "Getting rid of his old girlfriends’ numbers and no more texting them," they continued, "John had tons of random girls texting him when he was with Katy before." Does that include texts from Rihanna? We kid! But seriously though, that would be enough to drive any woman crazy -- even if she's as beautiful as Katy Perry!

The final rule is as follows according to the insider, "Katy wants more dinners and date nights, and for him to be more romantic with her." Once again, something any girl might want from her man. Mayer seems to be following through on this end of the bargain seeing as the on-again off-again couple was seen together at an event honoring Don Rickles at the Waldorf Astoria in New York City.

A source reported, "They were so lovey dovey and all over each other," they continued,  "Katy and John were making no effort to disguise their relationship."

It seems as though Katy's heartfelt interview with Vogue where she revealed that she was still "madly in love" with Mayer may have tugged at the notorious womanizer's heart strings. She said, "All I can say about that relationship is that he’s got a beautiful mind. Beautiful mind, tortured soul. I do have to figure out why I am attracted to these broken birds." Looks like she's giving another go at repairing her relash with Johnny Boy.

These two may be spending as much time together as possible before John sets out on tour come July 7, which doesn't end until late October. That's a long time to spend apart!