Colossus is gay

Colossus would fall in love with another woman named Zsaji during the "Secret War" crossover. Years later, Colossus and Kitty would rekindle their relationship - once she was of appropriate age. This led to the two of them having sex, and Kitty orgasming so hard that she phased through the floor.

I'd probably list Rictor as gay despite him having sex with Rahne. There are also a fair number of alt universe gay X-Characters like James Howlett (X-Treme), Colossus (Ultimate), Beast (Exiles), and Angel ().