A couple (two people in a relationship) that is ultimately perfect and without flaw. A perfect couple are two people that love each other very much and support each other in everything they do. Even if relationships can be hard sometimes they still make it through and will always love each other.
Person 1: Wow, Kali and Neil are so amazing!
Person 2: I know right! They're the perfect couple. They are so cute together.
Person 1: I know I wish I had a relationship like that!