I honestly don't know why girls do that, the problem will not get fixed if you stay quiet. I always say loud and clear what's wrong. I hate when my friends get in fights with their bfs and say "he should know what he did wrong". He's not mind reader, and maybe the things that bother her are completely normal from his point of view.
What you put for italian, "mai arrendersi", is more impersonal, if you want it to be more imperative, like (you)don't ever give it, it's "non arrenderti mai". it's ok even without "mai" which means "never", the message is the same.