You Have To Watch Amanda Knox's 'Out-Of-This-World' Marriage Proposal

Amanda Knox, the woman who was once accused of murdering her roommate during a study-abroad program in Perugia, Italy  - a crime she was ultimately exonerated of after years in jail - is now engaged.

On Friday, the 31-year-old Knox, posted part of her engagement to boyfriend Christopher Robinson on her Instagram.

“It was just your average Sunday night, when suddenly…” she wrote.

The clip shows Robinson approaching Knox as she was sewing a cloak when a loud crashing sound can be heard. Robinson leads Knox to their backyard where a makeshift meteorite is sitting on the lawn. The theme from “ET: The Extra-Terrestrial” is playing as Knox approaches "meteorite." Inside of it: a tablet detailing the couple’s romance.

"I had been thinking about this, but it's already happened in the future," Robinson says in the video. "It's happening now. I don't have a ring, but I do have a big rock. Will you stay with me until the last star in the last galaxy burns out and even after that? Amanda Marie Knox, will you marry me?"

Knox says yes.

The couple has been dating for three years, according to People. They met when Knox reviewed Robinson's novel for a local magazine, CNN reports.

Knox’s former roommate Meredith Kercher was murdered in Italy 2007 while they were both studying abroad. Knox and then-boyfriend Raffaele Sollecito were convicted of the murder and sentenced to lengthy prison terms but an appeals court threw out their convictions in October 2011, citing a lack of evidence. Knox and Sollecito were fully exonerated in 2015.

The murder and the subsequent media phenomenon it created became the subject of a Netflix documentary.

[Photo: Instagram]