Kaley Cuoco, Ryan Sweeting, SAG Awards

Stefanie Keenan/WireImage

Kaley Cuoco and Ryan Sweeting were the ultimate whirlwind romance.

Within the span of two years, the couple met, married and called it quits, keeping us up to date on their love with a series of Instagram photos (most of which have now been deleted).

It was just last week that the Big Bang Theory star, 29, filed for divorce from her tennis hunk hubby, 28, after one and a half years of marriage...

So what went wrong? Let's take a look back at Kaley and Ryan's romance timeline:

Kaley Cuoco

AKM-GSI

Aug. 3, 2013: After a brief summer romance with Henry Cavill, Kaley moves on with a new fella named Ryan, introduced to her by mutual friends.

Kaley Cuoco, Ryan Sweeting

Jason Merritt/Getty Images

Sept. 22, 2013: Kaley and Ryan make their red carpet debut as a couple at the 65th Annual Primetime Emmy Awards.

Kaley Cuoco, Ryan Sweeting, Kiss

ANDY/AKM-GSI

Sept. 26, 2013: E! News confirms Kaley and Ryan are engaged after just three months of dating!

The bride-to-be realizes this might seem too quick to some, but when you know, you just know... "From day one I just knew immediately and it's been magic," she tells Entertainment Tonight. "We have all the same family friends...We grew up with the same people, we just never met. So I kind of feel that I've known him my whole life. I know that it seems a little crazy on paper, but it's what works for us."

Nov. 9, 2013: Kaley denies she and Ryan are expecting, tweeting (and later deleting), "I am not effing pregnant!"

Kaley Cuoco, Ryan Sweeting

Instagram

Early December 2013: The future Mr. and Mrs. Sweeting go on a "Dream vaca" in the Bahamas.

Kaley Cuoco, Ryan Sweeting, Instagram

Instagram

Dec. 25, 2013: Kaley and Ryan "killed it" celebrating their first Christmas as a couple.

Kaley Cuoco, Ryan Sweeting

Instagram

Dec. 31, 2013: The bride and groom say "I do" in an intimate, New Year's Eve wedding ceremony!

Jan. 15, 2014: In an Instagram photo (which has since been deleted), Ryan debuts a "Kaley" tattoo on his forearm.

Feb. 14, 2014: The Sweetings celebrate their first married Valentine's Day with each other and Kaley's beloved pups.

Kaley Cuoco, Ryan Sweeting, Instagram

Instagram

Feb. 16, 2014: Kaley and Ryan go to Disneyland for a "mini-honeymoon!"

Feb. 24, 2014: Kaley jokes to David Letterman on the Late Show about her fast-paced romance with Ryan. "We texted a little bit, dinner was great, and then he moved in the next day." she says. "It sounds so slutty, but it wasn't...It all did move quite fast on paper, but we really did know!"

Kaley Cuoco, Ryan Sweeting, Instagram

Instagram

Nov. 22, 2014: A week before Kaley's 29th birthday, her hubby pulls off the ultimate surprise party with all her family and friends.

Kaley Cuoco-Sweeting, Instagram

Instagram

Nov. 30, 2014: Kaley celebrates her actual 29th birthday in the Bahamas with her love.

Kaley Cuoco, Ryan Sweeting

Instagram

Dec. 26, 2014: One day after Christmas, Kaley has sinus surgery and recovers with the help of her "beautiful angel" Ryan.

Dec. 31, 2014: Kaley shares never-before-seen weddings pics in honor of her 1-year anniversary with Ryan!

Kaley Cuoco, Ryan Sweeting, Instagram

Instagram

Apr. 2, 2015: Kaley laughs off divorce rumors, posting a series of lovey-dovey pics to Instagram (which have since been deleted). "We are totally getting divorced, can't you tell!!?! ????" she quips. "4 weeks apart and finally reunited - I missed this guy more than anything !! #rumors #notpregnant #totallymarried ????"

May-August 2015: Kaley and Ryan appear every bit the happy couple, continuing to attend public events together.

Sept. 25, 2015: Kaley files for divorce from Ryan in L.A. Superior Court, citing "irreconcilable differences" as the reason for the split.

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