Early 2015 wedding! Actress Cameron Diaz and Benji Madden are reportedly planning a wedding

They are reportedly engaged after a whirlwind seven-month romance.

And now more details about their relationship have been revealed, including how Cameron Diaz knew that Benji Madden was 'the one' thanks to his 'chivalrous ways,' with insiders telling UsWeekly that the musician 'swept her off her feet.'

And the couple certainly aren't wasting any time as the 42-year-old actress and her beau are apparently hoping to tie the knot in early 2015.

A source said: 'Cameron hasn't been this happy in a long time.

'She found someone who knew how lucky he was to have her. The other guys treated her badly, but Benji would do anything for her. She's madly in love.'

Although Cameron had already met Good Charlotte rocker Benji, 35, years before, it was her good friend Nicole Richie - who is married to Benji's twin brother Joel - who set them up together.

An insider revealed that the pair bonded over music and had great conversations, saying, 'Cameron has great taste in music.'

Within a month the couple took their relationship public and after just six weeks, Benji traveled to Florida to meet the Other Woman actress's family.

And luckily the star's mother, Billie, approved, with a Cameron source saying, 'Billie absolutely loved Benji. She has been gushing about the relationship, saying she hopes Cameron settles down with him.'

By the end of summer the pair were practically living together in Cameron's $9.5 million Beverly Hills home.