Are you looking for a sexual threesome? Are you looking for a new girlfriend to join your marriage?
What do you mean when you say "required?"
Whatever these answers, it's unlikely that your tactic will be successful. Women don't generally see such a short request and go "yeah! That's the couple for me!" Some information about you would be useful.
Also, do a search on the forum for "unicorn" as I suspect that's what you're looking for...
I suspect that this effort works along the same lines as spam. Just post like this everywhere you can and hope you get some kinda response. I think it's done by single men on dating sites too.