Did Justin Timberlake finally pop the question to Jessica Biel? It's the big rumor started by one single tweet!

Justin took his girlfriend of four years to a luxury resort in Montana, and a local business claims that he dropped to one knee a proposed - and word got around town fast.

"Word on the street is that Justin Timberlake proposed to Jessica Biel at the Amangani last night," was the tweet from an art gallery. The Amangani is a luxury skiing resort in the state.

Biel and Timberlake took a break earlier this year, but got back to dating - and now Jessica could have the Christmas present of her life.