I think the "madness" describes how love makes him feel out of control. In less emotional moments he is able to "look back" more objectively, and see that the madness is responsible for the crazy fights and keeping them together... at least until he has seen the end.
As the Merovingian says in Matrix Reloaded: "It is remarkable how similar the pattern of love is to the pattern of insanity."
I think the "madness" describes how love makes him feel out of control. In less emotional moments he is able to "look back" more objectively, and see that the madness is responsible for the crazy fights and keeping them together... at least until he has seen the end.
As the Merovingian says in Matrix Reloaded: "It is remarkable how similar the pattern of love is to the pattern of insanity."