Umm, for this one I'm suggesting, it is a big spoiler, and yes the main girl is indeed in love with the first dude aka B for a while, but yes, she does indeed move on. Here it is anyway, if no one knows already:
Spoiler (mouse over to view) Tonari no Atashi
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Silent war... Love never fades away here, we've got an army of angels... silently bleeding... silently dreaming... not living in Lettuce Garden... |