Desiring sex with one’s spouse is not the same as lust. If a spouse isn’t trying to be attractive for the other spouse, then he/she isn’t doing his/her job. The new Catechism says that lust is a disordered desired for sexual pleasure. Desiring sex with one’s spouse is not disordered.
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Id say that desiring sex is the same as lust in most cases. If you desire sex because it just feels so good or whatever else, I think its wrong wrong wrong. However, if you desire it because you wish to please your husband/wife and unite with one another it is different. However I would guess that most people desire sex for the first option.
If desiring sex with ones spouse is not disordered how can lust be present in a marriage ever?
I’d guess that you’re young (less than 20?), new to the faith, or have some type of sexual history that you regret. One of the purposes of marriage is to relieve concupiscence.
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Lol, still a virgin, born and bred catholic but yes, 18. But its not like you think. As im sure you know (or maybe you dont, im not implying anything,

) , overcoming lust outside of marriage is one thing. And believe me, it is very hard for a teenager! And male at that, in this day and age. But to try and not have a desire for sex(evidently im referring to self gratification) when im doing it all the time, I cant think of a worse temptation! Just my take on it anyway.
Well that’s fine, but there is nothing wrong with it, if you’re married. Is it okay to see a spouse naked, but not in sexy lingerie?
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Id say there is a big difference between what is naturally there and what you add on so to speak. What is the purpose of lingerie? To make sex more exciting, to make one more attractive? To make ones spouse desire you more? I cant see how lingerie would be something God would condone. Sorry.
I don’t know how thin it is.
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I think its about as thin as it gets.
Anyway.
Its just my view on it. I cant see any possible way that buying lingerie brings a couple closer to God, which ultimately should be the focus of every action in their lives.