By the time you get to Act Two in the Broadway hit musical “Kimberly Akimbo,” you’ll probably be too caught up in the plot to notice it. But if you can, watch for the interplay between actors Jim Hogan and Emily Koch.

He plays Buddy, the father of Kimberly, a teenager who is aging at 4½ times her normal rate, suffering from a disease similar to progeria. Koch plays Buddy’s sister-in-law, Debra. Buddy and Debra despise each other.

“Act Two is one of the climaxes of the show where everything comes to a head and everything starts to go wrong. We’re sitting at a table, yelling at each other,” Hogan said.

It’ll be a screaming match on stage at the Academy of Music and the job for both actors involves loathing to the max.

Except, in real life, they don’t.

They’re boyfriend and girlfrien

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