The film stars Jason Sudeikis, Alison Brie, Natasha Lyonne, Amanda Peet, and Adam Scott.

He learns Lainey was there to lose her virginity to her teaching assistant Matthew, who Jake thinks is the most boring guy in the world.

At the end of the date Jake confesses that he wants to sleep with her; however, Lainey insists that they should just be friends and he agrees with the safe word "mousetrap" to be used to deflate sexual tension between them.

He brings her to the birthday party of his friend's child, where she meets Chris and begins seeing him to Jake's chagrin.

Two months after Lainey has left, during brunch with Paula, Jake sees Matthew and punches him in the face in front of his wife.

After the debut of her last film, Bachelorette, Headland became what she would later define as "suicidally depressed" noting that at one point "I was literally wondering, Should I check myself into a psych ward?"

[4] She realized she wanted to write a movie about sex addiction after entering into a relationship with someone who was already seeing another person, recalling that at one point she drove to his house "I just started crying hysterically.

The site's critical consensus reads: "Sleeping with Other People has likable leads and flashes of inspiration, but seems unwilling or unable to surround them with the truly subversive rom-com they deserve.

"[17] On Metacritic, the film has a weighted average score of 64 out of 100, based on 27 critics, indicating "generally favorable reviews".

[18] Indiewire gave the film a positive review, describing it as "a refreshingly funny and romantic feature that is more than worth falling in love with (again and again)".