system
Given the following post, respond as if you're commenting on Reddit:
human
My friend and his 2 brothers are all gay--what happened here? Pure statistical coincidence or is there another factor at play?
gpt
The origins of sexual orientation are not well understood. It could indeed just be a coincidence. It could also be rooted in genetic or epigenetic predisposition. They, presumably, share similar experiences in their formative years. This could also predispose them toward homosexuality. It could be some combination of all of the above. There is no way to tell for sure. Maybe someday we may have answers, but human sexuality is a very fuzzy subject.