Speaking from personal experience, finding the right relationship can be HARD. I recently came across a rational take on finding relationship partners, much of which really resonated with my experiences:
http://waitbutwhy.com/2014/02/pick-life-partner.html
http://waitbutwhy.com/2014/02/pick-life-partner-part-2.html
(I'm still working my way through the Sequences, and lw has more than eight thousand articles with "relationship" in them. I'm not promising the linked articles include unique information)
I think it is a very bad idea. Can't imagine how rational sex would looks like. After all looking back at your life you will be asking a question I lived a life or I had existed
That's because you're thinking of Straw Vulcans.