I take it you two are room mates?

The hypothetical gay gene, which, when found, will turn out to be a combination of genes.

It has already been established that there is a difference between the brains of gay and straight men.

There is one brain part, called the anterior commissure, that's bigger in gay men's brains than in those of heterosexual males. It connects two structures together. The amygdala on each side of the brain. And there is a whole potful of other differences in brain structure between gay and straight men.

Comprehensive article HERE.

(Fat lot of good it will do because it's obvious that you two will read into something what you WANT it to say, whether it does or not).

But the nub of the matter is that sexual orientation is not a matter of CHOICE. It is physiologically determined.

Don Firth