Often people who cheat tell themselves that their behavior is justified because their partner doesn't really care about them and therefore wouldn't care if they strayed. They might justify their actions by blaming their S.O. for not showing them enough affection or not seeming to care about them anymore.

Can cheating in school be justified?

The study found that the most common way students justify cheating is through “denial of responsibility,” such as by saying that they “accidentally” plagiarized, that they had too much to do and too little time, or that an exam was beyond the scope of the course.

Can cheating be morally right?

Cheating morally is a wrong action, because cheating is, as one case of the definition of immoral action, especially in the case of your question;” cheating in tasks in such a way to give you an advantage over others.”That clearly disregarded right of others.