The Bible does focus on actions as regards sexual sin (though Rm. 1:27 deplores the affections also), as proper affections do not justify adultery or homosex, etc. The reason “orientations” do not justify sin is because we are all “oriented” toward sin, and to justify sin on account of affection would open up a Pandora’s box of perversity.
While the Bible recognizes we have an Adamic nature with its propensity to sin, it also shows that man can repent, and resist and overcome sin. by God’s grace,
(Gen 4:7) “If thou doest well, shalt thou not be accepted? and if thou doest not well, sin lieth at the door. And unto thee shall be his desire, and thou shalt rule over him.”
(Acts 17:30) “And the times of this ignorance God winked at; but now commandeth all men every where to repent:”
Even the liberals acknowledge that we have an”orientation” toward violence, that we even delight in it.
Form a biblical point of view all sex outside of marriage is an equal perversion. Dividing it into fornication, masturbation, pederasty, adultery, etc., is a modern point of view.