Any good boss wants his people to be successful. Assuming he has even a bit of maturity and genuinely likes you, he's going to encourage your growth, even if it

Any good boss wants his people to be successful. Assuming he has even a bit of maturity and genuinely likes you, he's going to encourage your growth, even if it means you move on to another group. The alternative is that you stagnate and become miserable, and that's no good for either of you. He gets that, I guarantee, if he's even a tenth as great as you say he is. So in short, you have nothing to worry about. It sounds like you're both menschy guys. He'll help you out, you'll help him out, and you can be friends after all of this. Ask him to grab coffee, lunch, or something else private. Be direct, be honest, tell him what's up. He probably already expects it, if your frustrations are such a common topic of conversation. edit: Yeah, listen to swombat, he said it even more efficiently than I did.