A and B plan a movie night. B is a fan of horror but A is terrified of horror movies. However, they lie to B and say they aren't.
B suspects A lied when A hides their face for most of the movie but A denies it.
B is proven correct when A comes to them for comfort after a nightmare about the movie.
Edit: everyone saw this and went "Remus ship" but when I made this I was thinking prinxiety-