Trevor is a very old member of Bryan's Supercluster, a part of the system that embodies, among other things, our identity as a gay man. Trevor is a masculine-androgynous man who is attracted to other masculine and/or androgynous men, with no attraction to women, and seemingly no attraction to non-binary people.

Unlike some members of the system, Trevor's attraction to men is very physical, but it is more based on how they present themselves than what body parts they have. While Trevor is attracted to GNC men, he is not attracted to femininity, as he sees femininity and androgyny as two different concepts. He doesn't seem to have a preference for whether he is or isn't the more masculine member of the relationship, but this tends to be how it is in most of his relationships.

While Trevor is allosexual, he has a concept of sex that has nothing to do with genitals and where he could have sex the exact same way with anyone despite what genitals they had. He does not actively seek to date trans men, but many of his partners in the system are transmasc, and he does prefer to date people who are actually certain they're men, as opposed to AMAB people who just default to categorizing themselves with men.

Trevor has complicated feelings about his identity as a gay man sometimes. One of the only times he got to explore that identity prior to the Unification was when we were underage and talking to an adult on MySpace who groomed us. This relationship was very similar to an abusive innerworld relationship Trevor had around the time he first split, which he was in when he split and that informed a lot of his attraction.

He also feels that he had his identity forced upon him, because our adoptive father abused our system in a way where he knew we had DID and treated different headmates as who they were in-system with the goal of altering their identities so that they would present, in the body, in a way that was more normative than how we appeared to be turning out. This included encouraging male alters to develop an attraction to men, to the exclusion of attraction to other genders.

This is one reason why Trevor's identity as gay is so important to him. The abuse had the end goal of altering our collective identity so much that, no matter how we try, we cannot develop genuine romantic attraction to genders other than men. However, not everyone who sees us self-identifying as gay will understand that it's a disordered condition that we've been traumatized into having, so it's important to him to express this identity in a positive or neutral way in contexts outside of how he originally came to have this identity.