He's Been:

I got accused of being an agnostic the other day. I can't even begin to tell you the depths of my despair!

To clarify: I am not now, nor have I ever been in doubt of the existence of God.
He has been the biggest constant in my life. When I have felt I could trust no other, I always knew I could trust Him. When my world has crumbled, when no one could know my secret pain, He has always been there. The few nights in my life where I didn't want to go on living and I felt I had no one to call, He's been the best friend that got me through the night. When my heart's been broken and ripped to shreds by would-be relationships, He's sewn it lovingly back into a crazy patchwork quilt. When my very dreams and successes have fallen flat, He's been the only thing that kept me laughing. When I've felt hideous and exposed to the world, He's given me the power of an ugly, shameful cross. When I've cried I've felt His hand around my shoulder. When I've laughed, He's been the color of the sunshine. When I've danced, He's been my only tune.
There is no one more powerful in my imagination. There is no one more lovely to me in my life. If He were the ocean I would be less than a plankton, and yet He loves me. If He were the world I would be a grain of fine sand and yet He cares for me like a priceless emerald. I can't earn Him, I can't deserve Him, I can't be perfect like Him. But His love reaches wider than east is from west, farther than north is from south, longer than time stretches in my finite mind at its best. Before I existed He loved me. Though I knew not myself, He could have called me by name. He's never forsaken me, never left me, never abandoned me, never left me empty, or cheated, or lonely, or scared. There has never been a moment in time where He has walked away because He couldn't handle me anymore. His wrath has been unspeakable, but His love has been unquestionable. His call irrevocable, His blessings irrefutable.
When I have been faithless, He has remained faithful. No, I have no doubts that my God is very, very real.