Any anime/manga with love triangle, where the female lead chooses the other guy in the love triangle and then realizes she's made a mistake by not choosing the main guy? Like she likes the other guy at first, but then realizes she loves the main guy instead.
Hana Yori Dango - Even though she did have feelings for Rei and chose him at first, Makino was tore up inside over Tsukasa who she was in love with from the start.
Hana Yori Dango - Even though she did have feelings for Rei and chose him at first, Makino was tore up inside over Tsukasa who she was in love with from the start.
I've only seen the anime a loooong time ago but maybe "Peach Girl" If I remember correctly Hirunaka no Ryusei might fit the description I'll come back later if I have other ideas
Edit : There's a little twist from what you want but I think you might like "Orange" (I believe it's a Manga from Takano ichigo, not sure tho)