Guess the film pls

[Sly]

Don't wanna gravedig, so here's the question: There's a film;

Two girls who are friends are pretty close sexually. These two girls' histories are showed separately. So here's the one girl's (blonde's) history: she loves a guy who's in relations with another girl called Brooke (big glasses she wears). Brooke accuses this blonde of stealing, and the consequences are terrible: blonde gets excluded from school/uni/college (no idea). Apparently, she starts hating Brooke.

But then comes the other girl's history, who is a brunette.
Her mother died. Then her father-in-law lives with now-new mother-in-law, Nina. There is a moment when f-i-l screws with m-i-l near the swimming pool. So the bru suggests the blonde that she kills her mother-in-law, and bru in return kills Brooke. She does that, but blonde wavers,

That's where it stopped. So if anyone knows how this film's called, I'll be very happy
Thanks in advance!

[(ツ)]

Don't wanna gravedig, so here's the question: There's a film;

Two girls who are friends are pretty close sexually. These two girls' histories are showed separately. So here's the one girl's (blonde's) history: she loves a guy who's in relations with another girl called Brooke (big glasses she wears). Brooke accuses this blonde of stealing, and the consequences are terrible: blonde gets excluded from school/uni/college (no idea). Apparently, she starts hating Brooke.

But then comes the other girl's history, who is a brunette.
Her mother died. Then her father-in-law lives with now-new mother-in-law, Nina. There is a moment when f-i-l screws with m-i-l near the swimming pool. So the bru suggests the blonde that she kills her mother-in-law, and bru in return kills Brooke. She does that, but blonde wavers,

That's where it stopped. So if anyone knows how this film's called, I'll be very happy
Thanks in advance!

Cruel Intentions

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That biplane just shot down my jet!

[Jansen]

Thought about that one as well, but wasnt the story a bit different?

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