You Caused It {Kurt/Sebastian/Blaine}

PLEASE DO NOT MENTION THE NAME OF THE SHOW IN ANY COMMENTS. I cannot get Kurtbastian out of my head. What are these feeeeelings!?!?! Anyway, this one was supposed to be kinda love triangle like. Blaine/Kurt are dating and they become friends with Sebastian, however, Kurt can’t stop his immediate attraction towards Sebastian, and the feeling is mutual. Blaine finds out, there is fighting, there is jealousy and ? Enjoy.