John Mayer has turned his back on his womanising ways to commit to new girlfriend, singer Katy Perry.
The musician has dated a string of famous beauties in the past, including Jennifer Aniston, Taylor Swift, Cameron Diaz and Jennifer Love Hewitt, and has earned himself a reputation as a ladies' man.
But John has reportedly had a ''heart to heart'' conversation with Katy after just several weeks of dating and has told her that he wants their relationship to get serious.
A source told RadarOnline.com: ''John has had his eye on Katy for a while and he had to try and convince her that he was right for her.
''The best way he thought he could do that was by dispelling his past reputation as a lothario to Katy.
''He knew he had to change his ways if he ever wanted to get serious with somebody and he had a heart to heart with Katy, telling her he was desperate to change his ways.
''Katy believed him and now their relationship is moving on. She wants to visit his home in Montana and has slowly warmed to the idea that he's boyfriend material.''
The 34-year-old singer also now realises his previous attitude to women made him a ''douchebag''.
John previously landed himself in hot water when he described ex-girlfriend Jessica Simpson as ''sexual napalm'' and said he was addicted to her ''like crack cocaine'' because she was so crazy in the bedroom.
The source added: ''He's never been short of female attention in the past and has always been quick to milk that at every given opportunity. But John realises now that it made him appear a bit of a douchebag and an unattractive catch.''
Katy, 27, had her divorce from Russell Brand finalised on July 16. Russell is now dating 'Dallas' star Jordana Brewster's sister, Isabella.
The musician has dated a string of famous beauties in the past, including Jennifer Aniston, Taylor Swift, Cameron Diaz and Jennifer Love Hewitt, and has earned himself a reputation as a ladies' man.
But John has reportedly had a ''heart to heart'' conversation with Katy after just several weeks of dating and has told her that he wants their relationship to get serious.
A source told RadarOnline.com: ''John has had his eye on Katy for a while and he had to try and convince her that he was right for her.
''The best way he thought he could do that was by dispelling his past reputation as a lothario to Katy.
''He knew he had to change his ways if he ever wanted to get serious with somebody and he had a heart to heart with Katy, telling her he was desperate to change his ways.
''Katy believed him and now their relationship is moving on. She wants to visit his home in Montana and has slowly warmed to the idea that he's boyfriend material.''
The 34-year-old singer also now realises his previous attitude to women made him a ''douchebag''.
John previously landed himself in hot water when he described ex-girlfriend Jessica Simpson as ''sexual napalm'' and said he was addicted to her ''like crack cocaine'' because she was so crazy in the bedroom.
The source added: ''He's never been short of female attention in the past and has always been quick to milk that at every given opportunity. But John realises now that it made him appear a bit of a douchebag and an unattractive catch.''
Katy, 27, had her divorce from Russell Brand finalised on July 16. Russell is now dating 'Dallas' star Jordana Brewster's sister, Isabella.
