Twilight Fucked Herself when she was a filly

I think the twitle says it all, but here it is; when twilight was a filly, she goes into heat. Nopony will help her. So she goes to visit the male version of herself.

Twilight is in heat, she asked everyone she knows for help, nopony wants to,

Who else is she gonna rut?

(As for the cover art, it is the only appropriate thing I can find for the story)

Complete