For some celebrity couples, it's never too soon to say, "I do."
Avril Lavigne and Chad Kroeger got engaged after just two months of dating, and they're not the only A-listers to rush to the altar after a short courtship. While many of these quickie celeb marriages have failed, some (surprisingly) haven't. Hey, when you know, you know, right?
We found six couples who married as soon as one month after they began dating, and believe it or not, they're all still going strong. Click through the slideshow below to find out which still-married Hollywood couples had shockingly brief courtships.
Carey Mulligan and Marcus Mumford
Carey Mulligan and Mumford & Sons frontman Marcus Mumford were <a href="http://www.thesun.co.uk/sol/homepage/showbiz/bizarre/3632104/Marcus-Mumford-is-Mr-Write-for-Carey-Mulligan.html" target="_blank">reportedly childhood pen pals</a>, but the two didn't begin dating until February 2011. By August they were engaged, and they <a href="http://www.huffingtonpost.com/2012/04/21/carey-mulligan-marries-marries-marcus-mumford-in-england_n_1442914.html" target="_blank">tied the knot</a> in April 2012.
Nikki Reed and Paul McDonald
Actress Nikki Reed and former "American Idol" contestant Paul McDonald got engaged in June 2011 after only two months of dating. They <a href="http://www.usmagazine.com/celebrity-news/news/nikki-reed-paul-mcdonald-get-married-20111610" target="_blank">married in October 2011</a>. Reed has said that she was a huge fan of McDonald's, though McDonald admitted that he had never seen any of her movies.
Nicolas Cage and Alice Kim
Nicolas Cage <a href="http://www.today.com/id/5567304/ns/today-entertainment/t/nicolas-cage-weds--year-old-former-waitress/#.UWcgoCt36Qo" target="_blank">met sushi waitress Alice Kim</a> at the restaurant where she worked, and they began dating in February 2004. They got engaged two months later and married in August 2004 (she was 20 and he was 40). They now have one son.
Mariah Carey and Nick Cannon
Mariah Carey and Nick Cannon <a href="http://www.foxnews.com/story/0,2933,353954,00.html" target="_blank">eloped in the Caribbean</a> in April 2008 after just over a month of dating. The couple, who have an 11-year age difference between them, revealed that they <a href="http://www.huffingtonpost.com/2012/12/11/nick-canon-mariah-carey-have-sex-listening-to-her-music_n_2278963.html" target="_blank">waited until marriage to have sex</a>. They are now the parents of twins.
Lamar Odom and Khloe Kardashian
Khloe Kardashian and Lamar Odom met in August 2009 at a party Kardashian threw for Odom's L.A. Lakers teammate Ron Artest. <a href="http://www.people.com/people/article/0,,20307896,00.html" target="_blank">They married just one month later</a> in a lavish televised ceremony.
Giovanni Ribisi and Agyness Deyn
Actor Giovanni Ribisi and model Agyness Deyn <a href="http://www.huffingtonpost.com/2012/06/21/giovanni-ribisi-agyness-deyn-married_n_1616911.html" target="_blank">married in June 2012</a>, though they had never confirmed that they were dating. However, three months before the wedding, Deyn <a href="http://www.thesun.co.uk/sol/homepage/showbiz/4388107/Agyness-Deyn-gets-married-to-Giovanni-Ribisi-in-surprise-ceremony-in-Los-Angeles.html" target="_blank">said she was single</a>.
Earlier on HuffPost: