A criminal justice advocate who was sensationally and unjustly condemned for her 2007 colleague's murder in Italy, she announced the news on Friday.
A cheerful Knox, 31, unveiled Robinson's elaborate, alien-themed proposal – and his emotional acceptance – on his Instagram and with an edited YouTube video.
The nerd proposal, filmed by the poet and author Robinson, showed that he had decorated the yard with sinister lights, with a fake meteor containing a special tablet – as Knox read the tablet and the ET: The Extra-Terrestrial soundtrack .
"I do not have a ring, but I have a big rock. You're going to stay with me until the last star in the last galaxy runs out." And then, even after that, Robinson said. "Amanda Marie Knox, are you marrying me?"
"Yes, yes I will," said Knox, who was so confident that she was wearing "Harry Potter" pajamas.
The couple then hugged each other.
"That's so cool," Knox said during a pause in his filmed kiss.
Robinson said in a post-production note that the proposed "insanity" was a developing year. He also explained why there was no ring.
"For the record, Amanda does not wear rings," he wrote.
Knox, at age 20, spent four years in an Italian prison after being convicted twice for the brutal murder of her English college friend Meredith Kercher, 21, in Perugia, Italy, where they were both studying.
The highest court in Italy ended up exonerating her in 2015 and Knox returned to her hometown of Seattle, Washington to rebuild her life.
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