Avril and Chad out together in May.

I feel like whenever Avril Lavigne is dating someone, we know about it. Or maybe those dudes were just the tip of the iceberg. Lavigne broke up with Brody Jenner in January after two years of blissful mutual douchiness. She started dating Brody soon after she split from her then-husband, Sum 41 singer Deryck Whibley, although she was hooking up with Brandon Davis prior to Brody. It was just in June that we heard that she was seeing Marilyn Manson, which was either not true or short-lived. So it’s a bit of a surprise to hear that Avril is engaged to Chad Kroeger, the lead singer of Nickelback. People mag claims they’ve been dating for six months, which makes me wonder how they kept it under the radar. I’m thinking they haven’t been together that long. Here’s the surprise engagement announcement:

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.

[From People]

I googled “14 carat engagement ring” and came up with Hilary Duff’s whopping diamond ring, that looks like it would be hard to lift. That thing is a honker. Don’t get me wrong, I wouldn’t turn it down, but I would get a dream house for that money, instead of wearing it on my hand and worrying that it would get stolen. I also spent some dreamy moments looking over diamond engagement rings on Blue Nile’s website, and they have a 15 carat diamond for 1.13 million and a 12 carat diamond for 1.69. (The more expensive one has better clarity.) So it looks like the dude from Nickelback gave Avril Lavigne a ring that was worth at least 1.2 million dollars. I would wonder how he came up with the money, but I guess Nickelback had some hits last year that I barely heard of and they’ve been touring and stuff.

Well Avril and the Nickelback guy seem perfect for each other. They’re both Canadian singers, they both had their best hits in the late 90s/early 2000s, and they probably share the same inflated sense of self worth. I jest, sort of, I think Avril has grown as a person and isn’t as insufferable as she used to be. Plus I know little about Chad Kroeger, except that when I type “Chad Kroeger” into google, the words “douche” and “douchebag” come up as automatic search suggestions. See – perfect for each other!

Hilary Duff with her 14 carat engagement ring in 2010. So when are we going to see Avril’s? I predict a photo op soon.

Avril last night. She didn’t wear her ring!

Photo credit: FameFlynet, PCNPhotos and WENN.com