Seth DeMeats (based off of yours truly) is out on Canterlot City one night. VP Luna is out on Canterlot City one night. They see each other, and a sibling bond forms.
I tried to write it in 3RD Person, so give me a break. I beg of you.
Also, the "Getting bullied because of being a commie" and the like is kind of a reflection of the bullies I had to put up with before I graduated, because I would write in a Russian-like alphabet if I couldn't jot something down in a document on my laptop.