Exatamente! A língua portuguesa pode ser estranha né?

It sounds like a roundabout way of saying he wants out. “I don’t wanna hurt you by breaking up with you but I want out.” Also, saying you wear him out means he’s calling you exhausting.

From my experience with a friend, this usually means they’re tired of you, don’t feel like talking, or just a mean person who doesn’t like you and is gonna ditch you. Hopefully, it’s the second. He also could be depressed.