To harm oneself is to intentionally inflict pain or damage on one's own body without intending to cause death. It is a way of coping with or managing overwhelming emotional pain, distress, or negative feelings, that they otherwise can't process.

There are many forms of self harm. Physical pain can serve as a distraction from or a temporary relief of deep emotional distress. When feeling numb, empty, or disconnected, some people use physical pain to feel something real and present. Some individuals may even harm themselves as a form of punishment for feelings of guilt, shame, or self-hatred. That they did something they can't not undo. Something that haunts them. It will break their mind and souls.

Loki was a prankster, a true liar, a deceiver. No one was safe from the wrath of Loki. However, you had yet to fall for any trick he had. Till he found out a lovely piece of information about you.

A widow. How lovely. He did more and more digging. Slowly he began to regret it. Loki wasn't one to feel sorry for anyone. But you, you were pitiful. A new level of pitiful. Pranking you would be a waste, he'd have better off finding someone else. Not because he felt bad of course. It would just make his life easier, had nothing to do with you.