I have read about it, but there are other theories that focus on psychological and social aspects. Some theories claim that homosexual behavior originates from the imitation of models and the reinforcement of these. Others speak of ambiguous stimuli or the impact of the first orgasmic experience. Some also emphasize the importance of the child’s relationship with their parents, specifically with the mother, stating that an overindulgent, possessive, and dominant mother and/or a hostile, ambivalent, and distant father play a role.
I am a 43‑year‑old gay man. I have only had sexual and emotional relationships with men, but for the past few years I have become very aroused by heterosexual porn, especially homemade videos and those in the cuckold or wife‑sharing category. I was in a relationship with another man for nearly ten years. For several years, we had an open relationship; sometimes we would invite someone else to join us. It turned me on immensely to watch another man penetrate my ex-boyfriend. To a certain extent, I was aroused by the feeling that someone was usurping my place or defiling something that belonged to me, but making love to him right after the other man had cum inside him turned me on even more, because I liked asserting my dominance.