Chad Kroeger proposed to Avril Lavigne by adding a page to her scrapbook.
The Nickleback singer and the Sk8r Boi hitmaker became engaged after a whirlwind romance this year, and he asked his fellow Canadian to marry him by writing it down.
Alison Eastwood, editor-in-chief of HELLO! Canada, said: "It happened in their recording studio. She was scrapbooking and he added a page to the scrapbook, and the page said: 'Will you marry me'?"
The pair's romance began when he started working with her on her new album in February, and he has revealed he is the "luckiest person alive" to be with Lavigne - who has previously romanced Brody Jenner and was married to Sum 41 singer Deryck Whibley.
He said: "I knew I was falling for her. It was incredibly powerful and something I'll never forget ... I feel like the luckiest person alive because I get to be with my best friend every day!"
Lavigne added her new love makes her laugh constantly and is impressed by how much he meets her needs.
She said: "He makes me laugh every day. He takes care of me in every way and is extremely attentive."