Lady Gaga & Taylor Kinney Break Up: A Timeline of Their Engagement -- In the Former Couple's Own Words

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Heart-shaped diamond rings may not be forever.

After all, Lady Gaga and Taylor Kinney ended their engagement after five years together, ET confirmed on Tuesday. 

The news undoubtedly comes as a shock to fans of Mother Monster and the 35-year-old Chicago Fire actor, as the two had been very open about their upcoming nuptials ever since Kinney popped the question on Valentine’s Day in 2015.

WATCH: Lady Gaga Spotted Without Engagement Ring After Taylor Kinney Breakup

Gaga, 30, rocked the unique Lorraine Schwartz sparkler proudly until late May. Since then, the “Born This Way” singer has been spotted sans her bling and has yet to publicly comment on their decision to split.

ET was with the former couple every step of the way after they announced their milestone moment, and here’s what they had to say:

February 2015: The proposal

"It was so special," Gaga gushed to ET at the Oscars last year."It was actually funny, he first gave me a Ring Pop – a candy Ring Pop – and I was crying so hard, and I said yes right away, and then he pulled out the heart-shaped diamond and I said, 'Oh, God!'" The ring, which had the inscription of "T <3 S” for the exes’ initials, had an estimated value between $400,000 to $500,000.

As for whether starting a family was on their mind, Kinney joked during a sit-down with ET Canada about how many kids he would want shortly after their engagement.

“A whole gang, a whole team,” he said. “I had a bunch of brothers, so I’d want more than one.”

October 2015: No save the dates

“We don't have a wedding planned yet, but we are so happy, and happy to be here tonight together,” Gaga told ET at the American Horror Story: Hotel premiere.

“Morocco would be great,” Kinney told us later that month at the Rock the Kasbah premiere with Gaga as his date. “She wants what she wants. I want to make sure that it’s right in what she wants. We’re going to take our time and do it right.”

MORE: Lady Gaga Makes Red Hot Rare Appearance With Fiancé Taylor Kinney at 'American Horror Story' Premiere

December 2015: Tony Bennett confirmed as wedding entertainment

“She invited me to sing at her wedding, so I'm looking forward to that,” Bennett told ET back in December about performing on his pal’s big day.

January 2016: Not consumed by wedding plans

“We don't have plans, you know, we're really not obsessed with the wedding,” Gaga told ET on the Golden Globes red carpet. “We just love each other and are focused on making our fans happy. They've given us so much and we just want to give back.”

May 2016: Kinney had a wedding reception menu in mind

“Just food. Just good food,” Kinney told ET at the NBC Universal Upfronts in New York City.
He then specifically noted that the “good food” he was referring to was pizza. “I'm pretty quiet and easy. So, I really... I'm not picky.”

For more on Gaga and Kinney's split, watch below: