hummm.... love works differently for me.. i love with all my
heart not becos of responsibility, but becos i want to.
if i had a guy who treats me as a princess and later wants to break
up, sure, i would be sad. but not becos i'm losing someone who
treats me well, but becos i am losing the one i love
if i had a guy who treats me moderately, and later wants to break
up, i would be equally sad. cos my love for him is the same how he
treats me. but obviously if the guy treats me like crap, i would
leave sooner or later 
i don't feel it is a responsibility to love. if it becomes a
responsiblity, it is not love. love is given, free will. love does
not ask, it gives. love does not evny, it trusts. love does not
stray, it stays. love is not a effort, it is free flowing from
one's heart. to all my ex-s, i can truely say, 'i had love you will
all my heart, given all i can, trusted without question. but u
chose to lie and treat me as dirt. i have to leave to keep my
sanity'