Orientation:
I understand orientation is the way you live based off of your right-based convictions. Sexual orientation is a very important topic and political. As long as relationships aren't abusive (such as child molestation is) then they are ok. They may be meaningless to some but everyone bears reality in their own way. To be that personal one needs a special level of trust, which in turn requires undivided attention and love from each other. Whatever type of partner helps you be your best is what is appropriate. Some feel better with a partner that completes their sex and ability. Others feel better with a partner that anchors their sex and ability so that they can face others. Gay and Bisexual relationships are harmless. I don't think it is selfish as some biases are beyond reconciling, and a bias isn't necessarily evil.
What we can hold each other to is our civic duty, not our sexual orientation. Discrimination, such as housing or workplace kinds, isn't right.
It's not that gay relationships do wrong, but straight relationships are enriched to the point of benefiting children. It's not that gay people have bad taste in each other, but they shouldn't forgo the responsibility of parenthood. Children learn tendencies and peculiarities of maleness and femaleness from their parents most of all.
Gender:
There are only two genders according to our genetics, as with all animals. Perhaps the word is misused to replace "fascination" or "emulation"?
What affects the mind sexually are the chemicals Testosterone and Estrogen. They apparently have an effect on one's metabolism down to one's very thoughts, hence the female and male 'personas'. People are bound by these 'paces' of thought but are capable of having any thought despite one's gender. One's persona of joy or strength is a social construct to accommodate different stresses males and females commonly have (menstrual cycles, physical wear). One should like them both and keep both kinds of people as close friends to relate, and if one gravitates to one or the other one should still accept one's physical genitalia. It is an illusion that genital surgery will bring you happiness. How do I know this? Because genitalia isn't a source of real happiness! It is only a relief to use it after so much anxiety builds up. The purpose is procreation and unity with one's spouse to lead to creating and raising children. It unites in one's mission for God. Otherwise it's just a fad. One's body is formed to be conducive to either testosterone or estrogen by birth and supplements will only vary one's thought rhythms not change one's gender. One cannot change the whole body. One naturally and originally produces sperm or eggs.
Pornography:
Pornography is focusing on insignificance for they do not support you. They want to give you false hope of companionship. It reinforces pettiness and misery.