The best nightmare

It was the best of times, It was the worst of times When I met you I thought I had it all, I thought finally I was complete, I thought This will be the best of Times, If I had known right? That it was all too good to Be true, had I known I wouldn't have thought that I then saw that it was The worst of times, the Darkest of day and I knew That you were my worst nightmare, had I known I would have avoided it right? But naïvety got the best of me