I can’t pretend to answer that question, except that I have heard of “punks” in prison, who will find a protector who is stronger then they are, in order to prevent falling prey to rape. This is an unusual case, compared to most of our experiences. But it does illustrate an example of why someone might seduce a same sex partner, with intent, while not actually being attracted to that person sexually. Though, there is clearly an element of coercion, as this would be done for individual survival.
I imagine that there are many male prostitutes who are heterosexual, but find that men are more likely to pay for sex.
So, a couple of examples do come to mind off the top of my head.
I am not interested in having sex with another male. I will admit to having admired a beautiful male physique from time to time. I don’t think that this admiration would rise to the level of lust, but it does give me some insight into how a male might be attracted to another male. It may be just a matter of degree. I don’t quite know.
A professor of Pediatrics once made the observation to me that pedophiles suffer, too. This does not excuse their acting on the impulse to abuse children. But I had not considered that angle before that time. I can have compassion for someone, while disapproving of the behavior, and that makes me better able to help someone with such an impulse to find help, I hope. Suffering exists in many ways, which are not always apparent.
It also gave me a sense of gratitude that I don’t suffer from that particular affliction. Imagine the difficulty that a person goes through, who honestly is of an opposite psychological gender than the physical body? How difficult would that be? Even the Church in 2002 stated that gender reassignment surgery, while not something to be advocated, might be a more humane option than the suffering of a transgendered person. I don’t want to derail this thread. But I did want to make the point that there is a lot of suffering, historically, in the homosexual population. By that population, I mean the people who honestly claim to fall in love with people of the same gender.