John Mayer hit up his ex Minka Kelly and told her he's hooking up with Maniston.

A Kelly pal said, "Minka received a call from John prior to the story breaking about his relationship with Jennifer. He apologized to Minka, ‘Sorry, but I'm really in love.' " She found that interesting as, "during his relationship with her, John mentioned, ‘I don't really get this Jennifer Aniston thing.' "

I'm thinking John called Minka and asked for a goodbye fuck, went to her crib, begged for oral before he hit it, then yelled out, 'By the way, I'm dating Jennifer Aniston!' as he drove away in his car after tappin' that ass. Then Minka's friend talks to the press and creates a fake quote - "he said I don't really get this Jennifer Aniston thing" so she can insert a personal dig on Maniston. Minka's friend is awesome.

source