Complementarity is a popularly believed tendency that two people in a relationship compete the “missing pieces” or what is missing in each other. I have noticed this as I have listened to others explain how perfect their boyfriends/girlfriends are because they are “everything I am” or “we just complement each others weaknesses”. In my own relationship I have noticed that I have said that my husband just seems to “make me whole” and when we are not together it does feel like I am missing a part of myself. In the movie Jerry MaGuire, Tom Cruise shares his feelings for a girl that demonstrates complementarity.
It is easy to apply this clip to complementarity. Tom Cruise believes that he was missing something by himself and he has now realized that this other girl completes him.