Rebel Wilson and Adam Devine have acted as love interests so often that Rebel has joked that they are "essentially the Emma Stone and Ryan Gosling now... we just play love interests in all movies." Additionally, Adam has stated that Rebel is his "work wife." They have played love interests previously in Workaholics (2011), Notas perfectas (2012), and Más Notas Perfectas (2015).
Todd Strauss-Schulson watched over 90 romantic comedies over two weeks and noted the similar visual and narrative tropes among them, including: New York City, Starbucks coffee, rain falling when couples kiss, half-moon windows, and bubble baths.
Rebel Wilson just asked Adam Devine if he wanted to play one of her love interests. "The movie script was super funny, so as soon as I read it and I knew Rebel was attached, I was like, yeah, sign me up."
According to Rebel Wilson, rehearsing the musical numbers came very easily to her and came very easy to her and Adam Devine. In their previous film, "Pitch Perfect" (2012), they were required to attend a boot camp in which the music and choreography was taught to them prior to filming; this experience prepared them for learning two musical numbers in a short time.
Todd Strauss-Schulson: as a co-worker on the hover board when Natalie first sees it in the "rom-com" world.