<"You have heard that it was said, 'You shall not commit adultery';
<but I say to you, that everyone who looks on a woman to lust for her has committed adultery with her already in his heart. (Matt. 5:27-28 NAS)
"looking to lust" is a sin
"lusting" is not a sin
If I seek out porn, I'm looking to lust. I'm engaging in vicarious intimacy with a strange woman, or I'm some degenerate with a cuck fetish.
If I ogle a woman in provocative clothing, I'm looking to lust. I'm letting myself imagine being intimate with her.
but if I get aroused from an encounter with a hot woman, and resist fantasies about her, I have not sinned.
You hit it square when you said "wandering eyes and lewd thoughts"