It's been a bumpy road but Jessica Biel and Justin Timberlake have certainly brought sexy back with news of their engagement. From relationship lows (rumors of Timberlake's infidelity) to total highs (the snowboarding pair love the mountains), check out a history of their relationship.
January 2007: Justin splits from longtime girlfriend Cameron Diaz after almost four years of dating
January 16, 2007: Justin and Jessica are spotted chatting at a Golden Globes after-party -- their chemistry reportedly angers an on-looking Cameron Diaz.
May 2007: Biel and Timberlake take things to the next level with a trip overseas. The pair are spotted getting cozy in Manchester at a football match.
October 2008: The couple that votes together, stays together? Maybe. Justin and Jessica show their support for Obama at a rally in Las Vegas.
December 2008: Jessica tells the UK edition of GQ, "Justin Timberlake is the one part of my life that I own." And how does JT feel about that, Jess?
February 2010: Jessica tells Vogue that Timberlake is "the most precious thing I have in my life."
January 2011: After reports that Justin cheated on Jessica with Oliva Munn in October 2010, rumors surface that the "Sexy Back" singer was continuing to carry on a textual relationship with the up-and-coming actress.
March 10, 2011: After four years of dating, Justin and Jessica break-up on mutual terms and remain good friends.
June 2007: Even though, at the time, the pair were off-again, Timberlake tells Vanity Fair, "[Jessica] is the single-handedly most significant person in my life."
September 2011: The pair makes time for an intimate dinner as Biel attends Timberlake's Shriners Hospital for Children golf event. At this point, we're thinking things may be a little more on than off.
October 19, 2011: Just friends? We think not. Justin and Jessica are spotted on a double date with Timberlake's parents in Los Angeles.
November 20, 2011: After rumors get out that the pair are back on, Justin and Jessica further the speculation after getting cozy at a Tod's even at the Chateau Marmont.
January 2012: News breaks that Justin and Jessica are finally engaged! Timberlake reportedly proposed to Biel while the pair were vacationing in Jackson, Wyoming.
Check out the cutest moments from the couple's relationship below: