Jennifer Aniston Johnifer4Months.jpg

Guess we know why Jen looked so comfy with John so fast!

The NY Post reports that Johnifer has been a couple since the beginning of February (Jen was linked to Jason Lewis in late Feb, though) before coming out officially earlier this month. "They'd been keeping it under wraps and hiding out together on their dates," their source says. "Then Jen realized it wasn't just a fling and decided to take it public."

Does this mean Mayer the player has truly settled down?