A central scene in directorLuca GuadagninosChallengerswasnt in Justin Kuritzkes original script.
The scene in question has the trio relaxing in a hotel room, flirting.
How often does this happen, going after the same girl?

(L-R) Mike Faist, Zendaya and Josh O’Connor in ‘Challengers’MGM/Everett Collection
It ends with the three of them on the bed together, kissing.
I dont think that was in the script at the beginning.
Not at all, GuadagninotoldEntertainment Weekly.

The director was adamant that the moment should not be, shall we say, a quickie.
Zendaya confirmed the scripts ongoing evolution.
That was very apparent from the first time I spoke with him about this film and about these characters.
I have no idea.