"Jennifer reached out to John first. She had a few glasses of wine - then decided to throw caution to the wind and make the first move. John was pleasantly surprised to hear from her," a source said.
However, Mayer seems to be more concerned about changing her lifestyle rather than getting back with her, as Jennifer has been photographed on several boozy nights with pals. Jennifer's pals are worried, as the Hollywood actress is having a tough time dealing with her split from Mayer.
"Jennifer's friends are worried. She's had a really tough time since the break-up and the more time goes on, she realises how much John still means to her," a source told the Mail Online website. "Jen just needs to be careful about not being so needy and vulnerable when it comes to men. Unfortunately, partying tends to bring that side out of her and she's a lot more appealing to John when she parties less," the source added.