What is the one thing that you have learned of your opposite sex from your past relationships?

I've learned that what you see isn't what you get





For example the roughest looking drug dealer may turn out to be the sweetest gentlest person you'll ever meet and the most quiet sweet looking friend may turn out to be the most craziest loudest irritating person in the worldWhat is the one thing that you have learned of your opposite sex from your past relationships?
Don't go out with someone you're not fully attracted to because if you're not initially you never will be.