You have stuck by your friend for a long time (or not so long) and you have formed an attachment. you are willing to give anything for this person and always have his/her back. you will never give up on your friend so dating your friend is a very good choice.
You are a realist. You change what you can and recognize and accept those things in your life that you can't change. You do it your way, but at times chase away those who interpret your actions as self-centered and uncaring.