The OP already said in the first post that he decided not to copy the homework and is no longer planning to do so.
Thank you, I see what you are saying. However, if he had already resolved to copy the homework, then changed his mind, he still committed the sin when he resolved to do so. I know you know this, I am just clarifying this for the reader’s benefit. I also just assumed (and we know what happens when you “assume”) that he was in the habit of doing this. He might not be.
To the OP, relax, this does not seem to rise to the level of mortal sin — the matter is probably just too trivial. Plagiarizing a term paper, perhaps. Copying Friday’s math homework assignment, probably not.
ETA — Since this thread has been closed, I cannot answer anyone’s posts, but I would just note that, according to the OP, he wasn’t just “tempted”,
he had resolved to commit the sin, and then changed his mind. For the sake of clarifying the discussion, sin begins in the will, and whether the act is carried out or not, is of secondary importance.
I hope the OP will not think I am “beating up on him” for something that, as sins go, is pretty tame. Many people cheat their way through school, even through university, and since our society rewards results and earning ability, over
the means used to obtain those results and character development (upon which you cannot place a price), shaky academic credentials are just kind of “winked at” and regarded as being of little importance.