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RYAN & KAYLA
The gold medal swimmer (and Dancing with the Stars contestant) denied that he had a girlfriend during the Rio Olympics — and talked up his Tinder prowess despite murmurings that he was dating former playmate Kayla Rae Reid. Turns out, she was his girlfriend, and a pretty serious one at that. We got a hint when he shared photos with Reid in Rio, and he confirmed that the two were together after his first week on DWTS with an Instagram post. Now, they're engaged, less than one month after confirming their relationship.
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CAMERON & BENJI
These two had a literal May-December romance before Madden popped the question – even though they're only six years apart! They started dating in May of 2014 and were engaged by December.
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AVRIL & CHAD
They're both musicians from Canada – so it didn't take Kroeger and Lavigne too long to bond. They announced that they were set to tie the knot after six months together.
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CAREY & MARCUS
Making for the cutest love story ever, Mulligan and Mumford were childhood pen pals before getting to know each other again as adults. The two didn't need much time to know their love was real: They got engaged after five months together.
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MARIAH & NICK
It was quite a surprise when these two tied the knot – they did so after just six weeks of dating in a surprise ceremony.
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KHLOé & LAMAR
When you think whirlwind romance, you think Khloé and Lamar. The two famously had an epic wedding (documented on Keeping Up WIth the Kardashians, naturally) exactly a month after they met.
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KALEY & RYAN
It took only three months for Cuoco and Sweeting to decide to wed. "It all did move quite fast on paper, but we really did know," she told David Letterman of their quick courtship. Their marriage, sadly, was equally short-lived: The pair announced their split after 21 months.
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KATY & RUSSELL
Talk about quick moving: The former couple announced their engagement in January 2010, only two months after they publicly confirmed their relationship.
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PAM & TOMMY
These two may hold the record for quickest-to-get-engaged in Hollywood. They knew one another for only 96 hours (that's four days) before walking down the aisle. It was a complete surprise to pretty much everyone, including Anderson's own mother, who learned about the wedding from PEOPLE. "This was the first I'd heard of him," she said. "It is heartbreaking and shocking."
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