I don't understand what you mean about DB complaining about paying you. That seems really messed up.
It seems like you feel underappreciated. Maybe they are just busy in their lives and taking you for granted, but it doesn't feel good to be in a position like this. It sounds like it feels like they are neglecting their side of things -- like stocking the fridge, respecting your time in the morning, etc.
Maybe they are just busy? If that seems like the case, it's possible they are just overlooking these things and don't mean anything by it (even if it feels bad to you). You could sit down with them and point out some of the great things you do and how much you love the job and propose a raise, if you feel this would help you be happier there. It seems like this might be the jolt they need to notice and appreciate you.
BUT... be prepared that if they say now, you may be more disatisified and uncomfortable.
