That's taking it way too far. Adultery is the physical act of sex with a woman not your wife. We all have sexual thoughts, this is designed in by God.
That’s taking it way too far. Adultery is the physical act of sex with a woman not your wife. We all have sexual thoughts, this is designed in by God.
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Jesus says differently.
“But I say to you, That whoever looks on a woman to lust after her has committed adultery with her already in his heart.”
To add to the Scripture quotation, which is true and applies here, the man may find the woman attractive. That is out of his control, and not inherently sinful. However, to ask oneself a question like that is an act of the will - it is a choice, and in that, he has sinned gravely in his heart. It is about what we do with those feelings that is sinful - in thought, word, or deed.
Likewise, fleeting thoughts of this nature can come involuntarily - that is not a sin. At best, it is a temptation. It is a sin when one decides to hold on to, or to stoke such thoughts. Then, one is choosing to entertain adultery (or another sin) in the heart.
So, yes, you are right that our sexuality is good and from God. That means that our feelings are good in themselves. However, we are also subject to the effects of original sin. Therefore, our sexuality can be twisted and turn sinful. So, we have to direct and guide it with our reason (aided by God’s necessary grace) to what is good.