Eilis and Tony/ Eilis and Jim
I had my problems with this film, but after reading the book I was quite enlightened with it. This is technically a love triangle where only Eilis knows of the existence of the two men, and with choosing one of them comes a decision of choosing her future as each of the men represent something important in Eilis’ life.
Bianca and Cameron/ Bianca and Joey
10 Things I Hate About You
Although this love triangle was short lived, it was because the two men wanted to take Bianca out that the events of the movie started to unfold. Without them, Patrick wouldn’t really have gotten to know Kat, and we wouldn’t see Heath Ledger do that quick song number.
Rachel Dawes and Bruce Wayne / Rachel Dawes and Harvey Dent
The Dark Knight
Of all the categories I would be mentioning Dark Knight, I didn’t think to mention it for this category. In this film, Rachel had been dating Dent, and while Bruce Wayne wanted her back, they can only be together when Wayne decides to stop being Batman. I think the letter Rachel left for Wayne is a pivotal factor in the development of his character, and the decision Alfred made to conceal it by not giving it to him.