It is found that many people stay in an unhappy relationship as they don’t have a ‘good reason’ to leave. It leads people to live lives in which they feel unfulfilled and are not able to utilize their potential. It is better to end a relationship that feels incomplete than to live an incomplete life.
http://www.glamour.com/sex-love-life/blogs/smitten/2015/09/breakup-guilt-reason-break-up