Take the hits and keep moving forward.

[T1000]

Or maybe:

I can assure you I took the separation very seriously.
I was very upset when you left. It was the end of our relationship as it was.
I decided if it could be saved it was worth saving. I wanted to keep our family together.
Every time we interacted, went on vacation, slept with each other and had fun with the kids during our separation it gave me hope that it wasn't the end. I hoped for a new relationship with you.