I'm not sure if I'm going to draw some hate from this, but here goes.
When I was with my ex-partner, we had a mutual friend whom we spoke to via the internet - where me and my ex met, he was a furry. Eventually, my ex-partner came closer and closer to their first fursona, I simply smiled and went along with it as one who is enamored does. My ex went to stay with aforementioned friend over one Easter, as my grandmother was going to be around, and was off with me when we were re-united, apart from one lovemaking session, which was unusually tender and gentle. After a week, I snuck a look at my ex's diary.
They had slept together. At this point I started to lose sleep, spending hours awake while my ex slept soundly, in our bed. I somehow got it into my head to create a fursona for myself, I don't know why. Perhaps to try and understand what was going on. Perhaps it was to compete with the now former friend, eventually I confronted my partner, who left within a few weeks, after pleading with me to forgive them. The fursona I had developed just seemed to stick, over the next couple of years, I formed a small online circle of furry friends, even getting back into contact with my ex without realising, until they revealed themself.
After a while, I lost everything due to some stupid mistakes, and went for a few more years effectively shutting away my fursona in the closet. My fiancée thinks it was a fad, and doesn't know that the fursona I created for myself, about five years ago, has become as much a part of me as my outer self since my heart was broken all those years ago.
For about two months now, I've been feeling empty, like something was missing. I decided this morning, after much thought last night to unlock the closet, at least online, so I can have that little piece of me out there, and not locked away from the world.
So, basically fabricated a fursona when my partner cheated with a furry, and found that it wasn't as fabricated as I thought.