For a relationship to really work, the people involved have to be more than just partners or lovers they have to be best friends. Best friends
Not only should they be your best friend, but the best everything else too. I have a problem with my girlfriend and she is my best friend too so
A girl best friend will there for you no matter what. Even if you do something horrible they will be by your side. It's someone you can trust, and be able to tell them