Gatsby - I grew up in a dysfunctional family. My H was guilty of emotional/verbal abuse in the early years. I think we (children of dysfunctional families) do tend to remember the good times.
What happens for me though is when some bad things happens, all the prior bad times sort of jump on board. Eventually this got to be too much which caused me to learn about boundaries, and that helped.
I also think it is human nature to focus on the good times. If you think of any past R you'll find you remember more of the good things.
But I do think forgiveness can play a role here. Forgive yours and your spouses contributions to those bad times - not for them, but for yourself. Then, it is easier to let go of those bad times altogether.
He: WAH Me: LBW Precious: DD
~ I'm grateful for every day I have to improve the way I relate.