Wow, you have dug up an old post. I had even forgotten I wrote it. We parted ways with our unicorn and haven't tried that route again. Z got tested for STDs and they came back negative. She never told us she got pregnant and we lost touch so can only assume she never did.
I have decided to try redefining myself as polyamorous. I believe that for some monos this is possible. Identifying as monogamous was no longer serving me and ....well it's all in the blog post you can link to it in my signature. I have myself up on OK Cupid but I'm looking at guys this time and not trying for a unicorn.