Satan had an extremely bad temper, and everyone knew that. He would constantly snap at the littlest things. When he'd snap, he'd break or absolutely destroy things when he's angry. But, he didn't know you had past trauma from your parentals getting angry and breaking things, so when you ran out on him, he was scared he had accidentally scared you off. He has a big crush on you, yet doesn't know how to express his feelings towards you due to only knowing anger for his 5000 years of life.