I'm gonna counter your trite with some more trite:
I felt the same way as you; I fell in love and it seemed like things changed. The thing is, it doesn't last. Things will start to bleed back to grey again, and you're back to square one, just this time someone is depending on you.
The numbness or lack of an identifiable emotional state is depression. You can patch it with other people, but that doesn't solve the under lying issue for most people. Maybe it did for you, but it might not for this guy.>>7387
I think you should see a shrink. Not that I'm one to make suggestions like that.