The OP compares a good cofounder to a really good relationship... it is probably not a coincidence that "partner" applies both in the sexual/societal union sense and in the business sense.
I was not questioning whether a "really good relationship"
was a good foundation for selecting a co-founder.
I was questioning whether a one night project signifies
a "really good relationship".
It may or may not.
I think the OP had many great insights and I
enjoyed reading his post.
Also, W3STS1D3 4 L1F3!!