I love this girl but I have a problem

So I had known this girl for years.
She has a sublime, rare beauty. She has the voice of an angel. I love everything about her. When I'm with her, the rest of the world doesn't matter.
I talked to her for hours, and she smiled the whole time. I understand that I can be her, that she wants it too, and that we can be happy together. The problem is...
I'm 26 and she's 7.
What do I do?
And no, I will not "stick it in her pooper". When we will finally make love, it would be magical and I would be gentle.

I will not give up. I will do what I can.
I'll protect her from boys. I'll threaten anyone who I see near her.
I will be nice to her, and she will fall in love with by the time she's 18.
I'll marry her.
If not, I'll fucking kidnap her and just have her one time then bury her in the ground. If I can't have he, no one can Fuck all.