Chat do we know the name of this story

Don’t remember much but it included these 2 siblings (girl and a boy) who look very similar and one day their house burns down and this boy who’s like friends with them sees and runs in to save the sister cause he liked her but he ended up accidentally saving the brother bc he mixed them up ( I’m pretty sure the guy who got rescued knows his friend meant to save his sister instead of him not sure tho)