John Mayer wants to create a ''sanctuary'' for himself and Katy Perry.
The womanising rocker - who has previously dated a bevy of famous women including Jennifer Aniston, Cameron Diaz and Jessica Simpson - thinks the 'Firework' hitmaker is ''the one'' for him and he is keen to move in with her as soon as possible.
A source told HollywoodLife.com: ''John wants to take his relationship with Katy to the next level.
''He has suggested to Katy that they get a place of their own. He feels like she's the one for him and wants to commit himself fully.
''John is really into architecture and wants to create a 'sanctuary' for himself and Katy.''
The couple have been dating for six months and for Christmas, 35-year-old John presented the pop star - who was previously married to Russell Brand - with a custom-designed guitar to show his love for her.
A source said last month: ''John has put some serious effort into his Christmas gift for Katy.
''Since they met he has been trying to prove he isn't the guy everyone says he is.
''This should definitely prove that - every little detail on the guitar shows how much he thinks of her.''
The musician had the guitar covered in intricate designs, including 28-year-old Katy's initials and the date they first met.
The couple - who had a brief split last October before getting back together - are smitten with each other and like to spend every moment they can together.
One source said: ''They are together virtually every day.
''They hang out at John's place, cooking, watching movies and playing music.
''They take the odd trip away but generally they're trying to keep it behind closed doors.''