On a 1-10 scale, how cruel/evil do you consider infidelity?

Obviously the worst hurt/betrayal is getting murdered by a loved one. While cheating is indeed an emotional pain no one deserves, be honest what level would you rate infidelity from a 1-10 scale?

Depending on the reasons, I would consider infidelity an overall 5/10. What about you?

On a 1-10 scale, how cruel/evil do you consider infidelity?
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