Kristin Cavallari is back in the game with former flame Jay Cutler. The blonde bombshell and her on-again, off-again fiancee have become re-engaged less than five months after calling off their wedding. Although it's no secret that the cute couple had reunited, the Hills reality star confirmed that wedding bells will be ringing via Twitter this week. She wrote, "This time it's official. Jay and I are engaged again :)." The Chicago Bears quarterback had been a presence during Cavallari's stint on ABC's Dancing with the Stars this fall. They were also seen out and about holding hands. However, it wasn't until this week that the 24-year-old was once flashing her massive 5.2-karat rock. Apparently, a reunion has been in the works for some time now. Back in October, one insider told people that the twosome were "working it out." And it appears that's what they've done. Cutler originally popped the question back in May during a trip to Mexico. No word on what sparked Cutler's change of heart this time around.