And that's what people are doing all the time without any knowledge of Socionics, because same quadra just feels more comfortable especially in intimate relationships. But that doesn't mean that you can't enjoy the (occasional) company of an individual of opposite quadra. The person could be interesting, you could be compatible in other ways, or you might share some personal history together etc. There are tons of individual factors that could pull you together.
Quadras is just a fact. It doesn't limit anything.