They say opposites attract (yeah, and the same "they" also claim birds of a feather flock together), but how often do you find this to be true in relationships? There are a host of ways one can differ from their partner and I suspect the vast majority of relationships are various degrees of 'alikes' and 'not alikes'. Couples can vary in terms of physical stature, religious or political beliefs, communication styles, ethnic background, optimism/pessimism, or mental/emotional 'levels' to name just a few.
How are you opposite from your current or former SO's? What is the most 'opposite' relationship you were ever involved in?