John Boyega and Letitia Wright will costar in the upcoming sci-fi film "Hold Back the Stars."

They'll play a man and a woman trapped in space who relive memories of their romance -- while their oxygen slowly runs out. So... no happy ending for the "Star Wars" and "Black Panther" stars?

It's based on the 2017 Katie Khan novel of the same name. The tagline: "Love is stronger than gravity."

Mike Cahill, whose previous films include "I Origins" and "Another Earth," will direct from a script by Christy Hall.

Boyega, last seen in "Pacific Rim: Uprising," returns as Finn in  "Star Wars: Episode IX." And Wright will be back as Shuri in "Avengers 4."

[Via THR]