Jennifer Aniston is desperate to rekindle her relationship with ex-boyfriend John Mayer.The former 'Friends' actress - who split from the 'Gravity' singer last month - is reportedly phoning John every day in a bid to show him what he is missing.A source said: "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. He says they've been in contact pretty much every day since and he's really looking forward to seeing her again soon."However, it is claimed John is more concerned about the change in Jennifer's lifestyle - after she has been regularly photographed out drinking with friends - than getting back together with the brunette beauty.The source added to the MailOnline website: "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. Basically, she's still in love with him and has had a really tough time letting go."Jennifer - who is divorced from Brad Pitt - is also reportedly finding it difficult to change the way she approaches relationships.

The source continued: "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."

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