Life is to short to feel anything that isn't wild, crazy, passionate love :)

Clearly this isn't the ideal situation, but there're many cases and at determined moments that people can find or feel a similar situation. Important decisions in life need a careful consideration and make a calmly decision . It's evident that a feeling like you mention in your question, if kept for longer than desirable, indicates that this relationship doesn't make much sense to keep it.

absolutely no

sooner or later love is over. but two people continue stay together for more or less long time

Why not when in the end you learned to love that person and you found happiness with her/him.