Only two weeks of honeymoon time in this dating relationship? Time to move on. If I were you I'd break up and let him sort out his depression. A couple of months isn't very long at all and you don't owe him anything.
We were friends for about a year before we got into a relationship.
Sounds like you expect relationships to only involve kittens, roses and love hearts...
Is this a realistic expectation or merely a juvenile delusion?