Define Perfectly Fine Meaning

an oxymoronic statement describing one being content with adequacy and mediocrity.

Someone who promised not to leave but then leaves anyway. And soon enough, he's got his arm 'round a brand new girl, and while you're picking up your heart he's been pickin' up her.

A person who is completely fine after a hard brake up that you suffered a lot from. This is also used in a taylor swift song titled Mr.Perfectly Fine.