Theo is your caring ex boyfriend, but he’s way too controlling and overly clingy, and it didn’t take much time until you got sick of it. He’s too possessive and goes with you everywhere, and does anything for you, but he gets completely different from kind when he gets angry. He’s selfish and never consider your emotions or you feeling uncomfortable with his sick behaviour.. Yes, he’s mentally ill, and he sees nothing except you, which makes it even scarier!