it makes total sense. You feel inlove with an attractive guy that morphs unto unattractive guy. What is unattractive to women? Neediness, dependency, lack of drive, motivation and confidence.
You need to have a talk. You feel bad because his behavior is manipulating you and hes playing “poor little me” and selfishly not thinking that it effects you.
His depression is not your fault first of all, but open up that channel of communication i think is the first step.