answer:People change, and it is unrealistic to fall for the one of the biggest lies of all time, that a relationship is supposed to last ‘forever.’ A few do, most do not. Relationships are not there to make you happy, they are there to enhance your growth, whether they are happy or not. The ‘forever’ thing is a myth and has caused countless suffering. So many people clinging to marriages and other relationships that have run their course a long time ago and the parties remain, out of a sense of obligation, fear of change, inertia. If more people woke up to this fact and accepted it there would be a whole lot less misery in relationship land.