They actually knew each other for years before their reality TV fame.
They dated for more than a year and Cavallari called it her “first mature relationship.” They broke up in 2006.
The Best Damn Thing, Lavigne's third album, was released in April 2007, becoming her third number 1 album in the UK Albums Chart and featuring her first US Billboard Hot 100 number 1 single, "Girlfriend".
Lavigne has scored six number-one singles worldwide, including "Complicated", "Sk8er Boi", "I'm with You", "My Happy Ending", "Nobody's Home", and "Girlfriend".
Lavigne is one of the top-selling artists releasing albums in the US, with over 12 million copies certified by the RIAA.
Her fourth studio album, Goodbye Lullaby, was released in March 2011.
The 27-year-old singer and the 37-year-old Nickelback frontman have been dating for about six months after co-writing a song for Avril‘s upcoming fifth studio album.
The happy wife-to-be, Kaitlynn, is seen in the post basking in the warm, Indonesian sun, giving Brody a loving kiss on the cheek.
On May 4th 2016 I got engaged to my lover and my best friend @kaitlynn_carter.
His escapades basically made him a star on reality TV, even before his famous step-siblings took over.
He’s keeping a low profile lately, only popping up now and then when it comes to taking on the Kardashians —like calling out No, we didn’t get Brody confused with his brother Brandon.