I had an excellent 4-year relationship with a semi-dual though she cheated on me, which is an aspect that I don't attribute to type. She attempted to repair the relationship but she couldn't allay my suspicion that the same error would eventually be repeated. In hindsight, we had very similar perceptions of the world so we weren't that complementary to one another and with other aspects considered, we perhaps made better buddies than mates. However, I still rank semi-dual as having the third-highest potential for a partnership being stronger cognitively than two stand-alone people......

a.k.a. I/O