Is there a manga or anime or tv show?

-Hey guys I wanna watch something or read something where thers a girl who is a tomboy who falls for a girl and a guy falls for the tomboy and in the story the tomboy accidentally falls for the guy and whatever and they fall for each other even if the girl denies he feelings at first

TnxI'm not quite sure but the story you may be looking for sounds a little bit like a possible"Yuri" topic. Yuri is usually a topic about two girls and well you can get the gist of where it may lead but since you added the part of the tomboy falling for the guy i can't really answer your question to the best of your liking. Sorry if i couldn't answer the question and I hope what i wrote may help you find your answer! :)
Sounds like hentai to me