Dwight and Angela together at the end of The Office season finale reminded me of Helen caught in bed with Joe (at least I think those were their names, Crystal Bernard and Tim Daly's characters) after her diversionary boyfriend proposed to her, too, on Wings. And wasn't that also a cliffhanger? Sitcoms.

There's nothing you can know that isn't known.
Nothing you can see that isn't shown.
—The Beatles, "All You Need Is Love"