Months ago, rumors began circulating that Britney Spears and longtime boyfriend Jason Trawick were going to tie the knot. And on Friday (December 16), sources close to the pair and a mysterious tweet from the star herself confirmed that the couple is engaged.

Trawick had already been working with the star as her agent at William Morris Endeavor Entertainment when they began dating in 2009. They went public with their romance when they showed up hand-in-hand to the 2010 Grammy Awards. That May, the two decided to separate their business and personal relationships, and it was confirmed that Trawick would no longer be representing Spears.

The pair have always been pretty low-key. In an interview with Ryan Seacrest this March, the pop star opened up about their life together. "We're really normal," she said. "We just like to watch movies; we work out a lot; we take walks." In May, Spears told Harper's Bazaar, "I've thought about both [marriage and kids]," saying that tying the knot with Trawick could happen "if the timing was right."

And in an interview with Us Weekly in April, Spears gushed about life with Trawick. "We have such a great time together! He makes me laugh, and we are so comfortable being ourselves," she said. "Maybe [I'll marry again]. Never say never!"

In August, Spears and Trawick walked the red carpet at the 2011 MTV VMAs, and Britney later thanked Trawick when she took the stage to accept her Moonman for Best Pop Video for "Till the World Ends."

While the two have remained relatively private, they gave fans a peek at their personal life when they played the lead roles in Britney's "Criminal" video. The video focuses on a fictional love affair between their characters, who go on a crime spree that leads to a steamy encounter. Director Chris Marrs Piliero said Trawick "killed it."

This will be Britney's third marriage. She was married to Jason Alexander for 55 hours in 2004. Later that year, she married back-up dancer Kevin Federline; the two divorced in 2006. Federline and Spears have two sons, Jayden James and Sean Preston.

A rep for the singer has yet to confirm the news of this latest engagement to MTV News.

Send your well-wishes to Britney and Jason in the comments.