What is a girlfriend?

So I looked up the definition of a girlfriend, on Urban Dictionary of course.
Girlfriend:the one person you can really share everything with and who will be there through the good, the bad and the fucking excellent - notjust significant other, but essential.

Now, I have decided to evaluate my abilities of being a good girlfriend based on this definition.
Can you really share everything with me?
-Well I sure hope that you can. I mean, I will listen to everything you say. I share everything, basically, about myself with you. I hope that you share everything about you with me. Sure, we still have lots to learn about each other, but hopefully we will have the time to do that.
-Will I be there through the good, the bad, and the fucking excellent? Well haven't I been there for you through all of that. There hasn't been much bad, only a few times, but no matter what, even if we break up, I will be there for you.
Am I not just significant but essential?
-Well you are to me, so I sure hope that I am to you.

Now you ask the question: What is a boyfriend?
a great guy who make you feel good bout urself... a protector, and ur best friend
Example:keep ur hands off my boyfriend! he's mine! :)