A muffled and choked sob could be heard softly coming from Button.  "You're perfect, and why you ever said yes to me in the first place I'll never know, but you're better off without me.  So please," he moved his hooves and looked up towards Sweetie, tears streaming down from his eyes as he met hers, "just move on with your life and leave me be.  I don't deserve you.  I'm nothing but a hollow, dead shell of the pony you used to love.  A shadow of myself.  You can do so much better than a horrible pony like me."