Peter Facinelli, who plays Coop, likens his character to “a puppy in a room full of people who don’t like dogs.” Though Coop is for sure a doofus, Facinelli says he never plays the part for laughs. Instead, he says, “the more dramatic I try to be, the funnier it is.”

When Sam discovers that Coop slept with his girlfriend, the not-so-good doctor compounds the deception by telling Sam she’d rather be with a doctor than a nurse anyway. This news all but obliterates their nascent friendship (which spawned this awesome/awful rap) and leaves both men in a fragile state by the episode’s end.

“He tries so hard to fit in, and he really wants people to like him, and he wants to believe that people do, but there’s always a part of him that goes home and cries himself to sleep,” Facinelli says.

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