A Marriage Ended in Secrets

I was married to Mark for five years before I realized we had drifted apart. We stopped talking about everything important. One night, when things felt even more silent between us, I confessed a secret that I'd kept hidden for months, something I wasn't sure he would understand or accept. He looked at me with disappointment and told me it was over. I didn't fight him on it because deep down, I knew it might be true too. Now we're officially separated, but I can't help wondering if what I shared was normal in a relationship. Did I ruin everything that could have been saved? Any advice for me out there?