Jennifer Aniston, after her divorce with Brad Pitt, was reportedly having relationship with actor Vince Vaughn. Jennifer had denied the claims of the media that she was engaged to Vince or he had proposed to her. In 2006, representatives from both the sides declared that Jennifer Aniston had indeed split up with Vince Vaughn.
In April 2008, media had reported that Jennifer Aniston and famous singer John Mayer were dating together. John Mayer had openly said to the press after few weeks “listen, this is not a scandal, this is not an issue, and this is a serious relationship”
In August 2008, British media had reported that John Mayer had dumped Jennifer Aniston. However, a website had contradicted the report stating that Jennifer had dumped John. One of the sources also quoted that John’s ego and pride were the reason he has been telling people he dumped Jennifer Aniston. All the rumors were finally put to rest when John Mayer officially stated on ‘Myspace‘ that he had ended the relationship with Jennifer Aniston.

Jen: Life After Brad

Jennifer Aniston dumped by rock star boyfriend John Mayer

Where’s John Mayer? There’s no sign of Jennifer Aniston’s new squeeze as she sunbathes alone

Together back in May: Aniston and Mayer enjoyed a swimming pool frolic in Miami

Jennifer Aniston’s Christmas With Brad Pitt’s Mum

Jennifer Aniston in Harper’s Bazaar

Vince Vaughn Credits Aniston for His Success

Source: Jen Thinks Brangelina Are “Totally a Joke”
Brad Pitt and Jennifer Aniston when was together