Jennifer Aniston has told friends she's in love with John Mayer. The former 'Friends' actress began dating the 'Gravity' singer last month and has confessed to pals she thinks he's 'The One'.

She reportedly said: "I think I'm in love!" One friend told Britain's Star magazine: "Jen thinks John could be 'The One' and that she has fallen for him - hard! "She's usually pretty cautious when it comes to dating but, with John, she has decided to follow her gut feelings."

Jennifer - whose last serious relationship was with actor Vince Vaughn - also isn't worried about John's colourful past. A source added: "She has heard all about his past and his womanising ways, but doesn't see him like that." John has also admitted he is smitten with Jennifer.

A friend of the singer - who has previously been romantically linked to Cameron Diaz and Jessica Simpson - said: "He had become disillusioned with some of his earlier relationships, but he thinks Jennifer is gorgeous and he loves her sense of humour." The couple - who recently enjoyed a trip to New York - are now said to be planning a holiday to Mexico together. A source said: "Jen and John definitely want to spend more time together. They both seem very interested in seeing where this goes."