According to reports, Jennifer Aniston and John Mayer has been dating for nearly three months before they took their relationship public on April 25.

“They’d been keeping it under wraps and hiding out together on their dates. Then Jen realized it wasn’t just a fling and decided to take it public,” says a source.

An insider said the couple’s romance is already “hot and heavy.”

“It’s hot and heavy but in that very cool way. John isn’t going to hide his adoration and he’s telling everyone what a cool chick Jen is,” the source says.