He was a detective, so he was used to being around people who were depressed. He'd met you a few months ago during one of his jobs, and you'd helped him out. Eventually, you both started working together, after he learned how useful your ability was. But eventually, he started noticing things. He never saw you eat, you always avoided being around him, you slept more than usual, and you'd started to look more thin. Every single sign for depression. He didn't want to lose you.