Avril Lavigne and Nickelback frontman Chad Kroeger’s relationship has been so quiet that few even knew they were dating. Now, after a six-month courtship, the Canadian rockers are engaged to be married, Lavigne’s rep tells PEOPLE exclusively.
Lavigne, 27, and Kroeger, 37, first got together in February to co-write a song for Lavigne’s upcoming fifth studio album.
“A romantic relationship blossomed as they spent time writing together,” a Lavigne pal tells PEOPLE.
On Aug. 8, Kroeger popped the question, presenting Lavigne with a 14-carat diamond sparkler.
“He makes her so happy,” a family source tells PEOPLE. “Both of their families could not be more excited.”
It will be Kroeger’s first trip down the aisle, and the second marriage for Lavigne, who split from Sum 41 frontman Deryck Whibley in 2009. She had also dated Brody Jenner.
If Avril and Chad here are happy together, them I’m happy for them. I wish them all the best in their marriage. But they wrote music together? Really? That terrifies me. This is the girl that screeched out a song called “Sk8er Boi” and the guy who growls out stupid lyrics like “what the hell is on Joey’s head?” Can the world take their combined powers of horrible, terrible music?