Do you have any jealous snape headcannons?
This reminds me of when I stopped reading a fic because Severus didn’t get jealous about anything and seemed completely unaffected, and it felt like the most fake and unbelievable characterization ever. I was like, nope, I don’t buy it, because:
Severus is extremely insecure. First of all, he’s spent his whole life feeling bad about himself, so he tends to think he’s a terrible person who isn’t lovable. On top of that, he’s spent half his life being told he’s ugly, that he has a huge nose, greasy hair, etc. So if you combine low self-esteem in terms of self-worth with low self-esteem in terms of appearance, you get someone who probably doesn’t believe they can truly be loved by anyone. For a hookup? Sure, why not. But for someone to genuinely be attracted to him? Probably not.
That level of low self-esteem comes with huge insecurity when a third party appears, so rather than jealousy per se, it’s intense insecurity. The idea that at any moment someone better than him could show up (because he probably thinks that wouldn’t be hard), and the other person will realize they’re with someone who isn’t worth much and leave him.
He’s not someone who would externalize it at first, because one of his big but fascinating contradictions is that he has very low self-worth but is also incredibly proud. He probably thinks jealousy is childish and a sign of weakness, so he’ll bottle it up as much as he can.
At first, he might not even realize it’s jealousy, because he lives in a kind of delusion where he denies his own emotions, so he just feels terribly irritated and finds the person he’s jealous of extremely annoying for no clear reason.
He’d be extremely rude to the person he sees as a threat, rude to the point where you’d want to slap him to shut him up.
He’d probably also be quite sarcastic with his S/O for no reason, because he has zero ability to manage his insecurity, high irritation levels, and no internal reflection about what’s actually going on with him.
He’s not pathologically jealous per se. If, for example, he knows the person is just a close friend of his S/O, he’d calm down quite a bit. But if he doesn’t understand the situation, that’s when he gets deeply triggered.
The more trust there is, the less jealous he becomes, although he still needs quite a bit of reassurance in certain situations to feel secure, even in an established relationship.
He’s not the type to make a scene, but he’s definitely not going to pretend everything is fine either
He will never admit in his life that he’s jealous: not publicly, not privately, not even to himself. That kind of thing doesn’t happen to him, for God’s sake.