The little things that my boyfriend does that I don't like are adding up and are eating away at me. I'm sad and disappointed in him all of the time but I don't know how to explain it to him. Idividually they're not that big of deal but added up there really taking their toll on my emotions. Whenever I tell him I'm upset at him he says that he's terrible and gets really sad and emotional. I hate putting him through that. What should I do?