Many times, but I don’t think he gets it yet.

Want to join in?
Well I just don’t understand what all this discussion is about or why he wouldn’t get it unless people are just confussing him more and not providing an accurate explanation.
OP, it’s very simple:
First of all, sexual attraction is not wrong. It’s the way we were made. As human beings, we are sexual creatures and sexual attraction towards people of the opposite sex is a natural, God given thing.
So no, that is NOT wrong.
**LUST is NOT sexual attraction. **
The Church’s definition of lust is not necessarily what you’ll find if you look up “lust” in the dictionary. Lust (as the Church describes it) is the desire or the act of using another human being as though they were an object. Lust is about not seeing a person as a person, but as an object to be used and abused.
Pornography is a great example of lust. The person who looks at pornography does not know or care about the model they are looking at. To them, that model is just an object that is there for their own sexual gratification. They don’t see that model as a human being with feelings and a life… as a person who is someone’s daughter, or sister, or mother.
A one night stand is also a great example of lust. The people who are engaging in this act obviously don’t care about each other. Their intent is to have sex with them once and then potentially never see them again. They’re being used like disposable tissue.
Now, let’s look at a scenario that is NOT lust:
A single young man goes to the park and sees a very attractive girl about his same age. He immediately feels attracted to her in a physical/sexual way. He thinks “wow, she’s beautiful… I wonder what her name is. I’d like to get to know her.” He gets up the courage to go up to her and introduce himself. They strike up a conversation and he realizes that he’s attracted to her personality as well. They hang out for about a half hour until one of them needs to go. They exchange phone #'s and plan on contacting each other again.
Now, during the course of their encounter the young man felt a physical, sexual, and emotional attraction to this girl. He became involuntarily aroused a couple of times while they were chatting and being flirty.
This scenario above was NOT lust. It was sexual attraction by itself with no lust involved.
So, let’s review:
SEXUAL ATTRACTION - A natural, God given feeling of attraction towards a member of the opposite gender.
LUST - Not seeing/treating another person as a whole human being, but rather as a disposable object to be used and abused for your own selfish sexual gratification.
Does that make sense?