Beeeeecause I wanted to? I ship everything, Yaoi, Yuri, even Hetero (though rarely, cause that's boring). Why are you making such a fuss? What happened to the "love and tolerate" attitude Mr. Brony? Have you learned nothing from the show, or are you still at that "Grrr I hate gays" stage of adolescence that most guys go through? It'll pass once the self security sets in.
On a related note, Broke Back Mountain was kinda a bad movie... in my own opinion that is. Philadelphia was soooo much better!