When is lust considered adultery? Say a married person has an attraction to someone they are not married to and they find themselves periodically thinking of this person.
Attraction is morally neutral. Therefore, recognising the truth about the fact that you are attracted to someone has to be morally neutral as well - either this or it’s hipocrysy. However, welcoming that attraction, embracing and fostering it is a completely different thing.
There’s an analogy with homosexuality: having an inclination towards your own gender is not a sin, recognising a member of the same sex as attractive is not a sin, but engaging in fantasies or going for the physical thing is a sin.
Feelings of missing that person, wondering what they are doing, wanting to be with that person, etc. Is that lust?
If we stick to the literal meaning of what you wrote, without reading between the verses, it’s not lust and not necessarily sinful. It’s normal to wonder what your relatives or friends are doing and to want to be with them, to some extent, given a strong affection. The nature of this affection is a problem.
Feelings on their own are morally neutral. But if someone welcomes them, invites them, enjoys them or acts on them, things become different.
There is often trouble discerning a friendly fascination from an infatuation, but asking your conscience tends to help.
I’ve always understood lust as involving wanting to have sex with someone you’re not married to.
Depends what you understand by wanting to have sex with someone. Example:
- Marriage includes marital acts, i.e. sex.
- People marry and some of them even want to.
- Those who want to marry want to have sex with someone to whom they are not marry - even though after they are married to the person. However, they want already. They want to have sex, but not just yet.
Also, we need to remember that attraction is a process quite sexual in nature. What drives people towards each other and makes them want to marry is at least in part sexual. What point marrying if the person isn’t sexually attractive to you, anyway.
To sum up, I would stick to the Douay translation, “who looks on a woman to lust after her.” This is neither simply looking on a woman, nor even lusting for her, let alone a simple attraction. This is more of a deliberate indulgence in sexual fantasies about someone.
When it moves on a more physical ground, lust would be seeking venereal (sexual, genital) pleasure. This is primarily meant to refer to intercourse, although it doesn’t take one. Not every kind of physical pleasure is sexual. Even the fact that it looks gross for someone doesn’t mean it has to be sexual for someone else and what’s sexual for one person, doesn’t have to be sexual for everyone, either.
However, things which lead you to orgasm or ejaculation or to fantasising about sex with the person, tend to be sexual because of your attitude. Personally, I doubt “accidents” put one in hell, but lack of proper prudence creates a great danger for the soul. One had better know his or her limits and not play with fire.
I suppose the main concerns are:
- creating occasion for sin (mental or physical)
- the potential for hurting relationships between other people
- reducing a person to a mere object, a tool in obtaining sexual gratification (a breathing and talking rubber doll)
If anyone thinks I’m wrong, feel free to correct me.