CJ and Squinney: you are CORRECT!
While Julie Andrews and Dick Van Dyke enjoyed a strictly professional relationship, one can glean from the above clip that, mid-song, Mary whispers into Bert's ear a promise to, finally, disrobe before him that evening. Hence Bert's flying delightedly like a little bird.
Second prize, a year's supply of Omaha steaks, goes to Squinney.
While CJ and a guest will enjoy a romantic Midwest getaway weekend at the ever-classy
Sybaris pool suites in Mequon, Wisconsin http://www.sybaris.com/modules/main/
(Warning: scrub down the pool slide before using)
I now present Duo #2, Donny and Marie Osmond
Were they boinking?