The closure principle is a Gestalt principle of perceptual organization, stating that we see incomplete figures as complete figures, by closing up or ignoring gaps. An example of this is seeing an incomplete circle, but perceiving it as a complete circle despite it having a gap figure. http://www.psychologyconcepts.com/closure-principle/ I came across this site when looking for a picture to illustrate my thoughts. The trouble with things been left undone is ...well...they're undone. It's very hard to move on from relationships that you feel like have not reached closure. It's like an unclosed circle. When it's not finished, when the ends do not meet things can always be put in or taken away from the experience. Sure you can place a covering over the opening in hopes of keeping the good memories in and the insecurities out but there's always something that can come along and rip that covering off and the good and the bad and the true and false will be all...