Thank you for coming to AlterHeros with your question.
Fantasies can be a way to enhance a sexual experience by imagining an erotic and pleasurable idea. For some people, fantasies exist only in an imaginary state and not in a real life setting. Your boyfriend could possibly be aroused by the images he sees in the various pornographic images he views. You have mentioned that he also watches different genres of porn, including heterosexual and BDSM categories. Trans porn may happen to be another genre that gets him aroused, but that doesn’t always mean he wishes to partake in a sexual encounter with a trans woman.
By the way, the word “tr*nny” is generally seen as very disrespectful towards trans women. I suggest that you use the words “trans woman” instead.
While your boyfriend has said he did not want to act on these fantasies, you can approach him to discuss this again. He may be reluctant to admit any thing about his fantasies, so aim to be non-confrontational and explain that it is something you would like to know more about. If he blows it off and says it is nothing, then it may very well be nothing to be overly concerned about. One of the important things to keep in mind is to have an open dialogue between both partners in a healthy relationship.
Your boyfriend has also indicated that he is interested in having sexual relations with you and another man. In this situation, you would be “forcing” him to perform oral sex on the male partner. This scenario has you wondering about your boyfriends orientation, mainly if he is bisexual.
An individual who identifies as bisexual is typically attracted to both their own gender and another gender. Sexual orientation is a tricky subject because individuals can have varying ideas about what their orientation means. For instance, some people who identify as heterosexual have had sexual encounters or relationships with someone of the same gender. The same goes for homosexual people as well. Furthermore, individuals may not subscribe to the labelling of their orientation or may consider themselves as pansexual (being attracted to people, with little to no concern over their partner’s gender).
From reading about your comment that you sometimes enact scenes where you are dominant over your boyfriend, the idea that he wants to be “forced” to do something sexually may stem from the excitement of being dominated. The very idea of being made to perform something sexual and erotic by you may be the focus of his desires, not necessarily the attraction to another male.
It would be beneficial to discuss your boyfriend’s feelings about this scenario if it continues to be a plaguing issue for you. If you are not comfortable with the idea of bringing in another partner into your sexual relationship then talk it over with your boyfriend to see if there are other scenarios that would elicit similar arousal.
Should your boyfriend reveal that he is bisexual, it is important to remember that bisexual people are perfectly capable of having a monogamous relationship. It is a widespread myth that bisexuals are promiscuous and want to have a relationship with a man and woman at the same time. Therefore, do not think that he is no longer attracted to you or wants to have another partner if he is bisexual.
I hope I was able to clear up some of your concerns and provide you with options to pursue with your boyfriend. Should you have more questions in the future, don’t hesitate to visit AlterHeros again.