Credit: Twitter Photo: Survivor's Whitney Duncan's engagement ring

This tribe of two has spoken — and they want to be together forever.

Survivor: South Pacific's Whitney Duncan and Keith Tollefson are engaged. The news comes shortly after the breakup of longtime Survivor couple Jenna Morasca and Ethan Zohn.

"I'm going to marry this man," Whitney tweeted on Feb. 14. On the same day, Keith tweeted, "Thanks to everyone for the best wishes on mine and @whitneyduncan's engagement. I know real original proposing on Valentines day ha." 

Credit: CBS Photo: Keith Tollefson and Whitney Duncan

Whitney's story is a bit controversial since the country singer was secretly married when she met Keith and they became a couple on Survivor in the summer of 2011. Obviously, that first marriage didn’t work out.

Today, Whitney tweeted, "Hey kids, don't ever elope w someone u hardly know. Not a good idea! U might meet your soulmate. & No one ever lets the past be the past."

Congrats to the happy couple!

Sources: @WhitneyDuncan@KeithTollefsonPeople