'Challenge' Wedding: This 'Battle Of The Seasons' Champ Is Getting Married

A 'Real World: San Diego' alum will say 'I do'!

Frank Sweeney may have experienced some relationship ups and downs during his "Real World" days -- but the erstwhile San Diego roomie's love life is now very much set in stone: The man known for his "Frankouts" is engaged!

"Family Portrait ***ring finger now accessorized #WannaGetMarried #YaOk #Engaged," the "Battle of the Seasons" champ and "Rivals 2" second-place finisher captioned the Instagram snapshot above, along with his future husband Trent Atkinson and their pet pooches. Wonder if Frank had a mini (but happy!) meltdown during the proposal.

Fittingly, congratulatory comments began flowing in from some of Frank's one-time cast members: Ashley Kelsey couldn't help but weigh in with a simple "What?!?!?!?!" while current "Battle of the Bloodlines" competitor Cara Maria Sorbello added "Omg fraaaaaaank tell me you are serious congrats!!!!!!" Looks pretty real to us, CM!

Be sure to offer your well wishes to Frank and Trent below -- and catch a brand-new two-hour episode of "The Challenge: Battle of the Bloodlines" on Wednesday at 10/9c!