What singer/song is this?

Sorry for horrible description. But the singer has a very unique name and is female (starts with an O? or A?). The song speaks sort of like she has a boyfriend who doesn't treat her right and another guy does. The lines would switch between the two views like (not the lyrics) "He'll never call her beautiful." "But that's all he ever calls her." "He" referring to both guys. I think the singer had blonde hair too. thank u!~