We've been friends for about 3 years, always been close, I've helped her in many relationships, we've had many heart-to-heart talks, and even exchanged drunk texts. She told me that she would feel uncomfortable in a relationship with me because "she knows I deserve better," but truthfully, all I want is her. She makes me happier than anyone, and she told me the same. I know I'm just 17, and I know she's unlikely "the one" but I really want to try a relationship with her.

I asked her on a date, she said yes, but when I asked her to be mine, she said she couldn't. She said she would hurt me, and that "I don't know what she's like in a relationship" when in reality, I've seen her through a couple, and I really think we would be good together. 

How can I convince her that a relationship would be a good thing for us?
user
Girl thinks I'm "too
assistant
We've been friends for about 3 years, always been close, I've helped her in many relationships, we've had many heart-to-heart talks, and even exchanged drunk texts. She told me that she would feel uncomfortable in a relationship with me because "she knows I deserve better," but truthfully, all I want is her. She makes me happier than anyone, and she told me the same. I know I'm just 17, and I know she's unlikely "the one" but I really want to try a relationship with her.

I asked her on a date, she said yes, but when I asked her to be mine, she said she couldn't. She said she would hurt me, and that "I don't know what she's like in a relationship" when in reality, I've seen her through a couple, and I really think we would be good together. 

How can I convince her that a relationship would be a good thing for us?
user
friend says she'd be
assistant