I'm not even sure if it's a film/tvshow i like, might be one i hate a lot but this scene keeps showing in my head and i just can't figure out what it is, it's bugging me.

Alright how to explain (might not be 100% correct as it's pretty hazy)

Theres a Woman, she might have a husband i'm not 100% and there's a guy who's in love with her, but she doesn't feel the same way about him.

He's infactuated with her, and she's just leading him on.

Another guy, let's say guy 2 tells her to stop leading this guy on and blablabla.

Now this part i'm not super sure on, there's a fire, or something that's happened, something bad, and the woman basically makes the guy in love with her go and well i'm not sure, might be go into the fire to save someone, or something, and he does it. Pretty sure he dies in the process..i know it's a really vague summary but that's all i keep thinking off.

He's so blindly in love with her that he does it.
Anyone have any ideas? Thanks