Is it a sin to arouse oneself?

[Bookcat]

There are many discussions about if a grave matter is ALWAYS a mortal sin or not. Many good, practicing, holy catholics would say that something that is grave is not ALWAYS 100% a mortal sin. It is just very close to it.

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I did not read all of the post…but this part stuck out …so I wanted to clear it up.

The Catholic Church says a grave matter…becomes mortal sin when it is done with full knowledge and complete consent. And if it was without one of these two it is venial (or perhaps no sin at all if the person had no clue)

It is not a matter of opinion. Or a question of what some holy Catholics say…

Compendium of the Catechism of the Catholic Church issued by Pope Benedict XVI"
**
395. When does one commit a mortal sin?**

1855-1861
1874

One commits a mortal sin when there are simultaneously present: grave matter, full knowledge, and deliberate consent. This sin destroys charity in us, deprives us of sanctifying grace, and, if unrepented, leads us to the eternal death of hell. It can be forgiven in the ordinary way by means of the sacraments of Baptism and of Penance or Reconciliation.
**
396. When does one commit a venial sin?**

1862-1864
1875

One commits a venial sin, which is essentially different from a mortal sin, when the matter involved is less serious or, even if it is grave, when full knowledge or complete consent are absent. Venial sin does not break the covenant with God but it weakens charity and manifests a disordered affection for created goods. It impedes the progress of a soul in the exercise of the virtues and in the practice of moral good. It merits temporal punishment which purifies.

vatican.va/archive/compendium_ccc/documents/archive_2005_compendium-ccc_en.html