it is because you are not able to, today (actually i mean) couples can't live more few minutes of happyness, the extrem limit : lies and comedy, simulation and self-interest, when it is not true why do you try to believe it ? and the others ?
do you think that they are so blind and so stupid to do not understand at the beginning that it cannot be successfull ?
I, i do not understand why you dare spoiling a part of the life of a boy or a girl who will never be yours, even eating a piece...all that is a strange game...
or only a point of view of course.