Sam Smith & BF Brandon Flynn Go Down Under to get Suuuper High

1/9/2018 7:31 AM PST

Sam Smith and Boyfriend Brandon Flynn Climb Sydney Bridge

Sam Smith and his BF, Brandon Flynn, are taking their relationship to the next level ... 161 feet high above, to be exact.

Sam and the "13 Reasons Why" actor hit up Australia where they mustered the strength for an adrenaline rush, courtesy of the Bridgeclimb Sydney. It's a super touristy spot where you can reach a summit that offers unobstructed panoramic views.

Sam's clearly not scared of heights ... and it's not just because he's up there. Sam strutted the damn catwalk and turned it into a show.