Chris decides to give Reagan a real proposal on the season finale of Up All Night. This is the 24th episode of the show's first season.
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Up All Night Season 1 Episode 24 Quotes

Chris: She's blasting West Side Story.
Reagan: Yeah she does that so the intruders think there are guys rumbling with knives and stuff.

I just was so just in the moment you know? I was so drunk and in love and I just dropped to my knees and I blurted out will you marry me?

Reagan