What is Love? Eternal Question Unanswered

Down the ages, or at least, as seen in my lifetime, one of the questions that doesn't find a solid answer is WHAT IS LOVE? I personally have a considerably complicated (in the eyes of society) love relation and I also witness a few great couples, and also on the contrary, many who were once 'two in one' breaking up their relation. As a result, all my life, this question of 'What is Love?' keeps visiting me as an old faithful dog and everytime I find that the answer I have is different from the one I had earlier. Sometimes, I have tried to go beyond What is Love and look into Why great lovers who had enjoyed each other's presence get separated as time passes? How does the enjoyment of each other turn into annoyance? How does the desire to be with each other turn to relief of getting separated? Osho has beautiful answers for this:

Once you are in a relationship you start taking each other for granted– that's what destroys all love affairs. The woman thinks she knows the man, the man thinks he knows the woman. Nobody knows either! It is impossible to know the other, the other remains a mystery. And to take the other for granted is insulting, disrespectful. To think that you know your wife is very, very ungrateful. How can you know the woman? How can you know the man? They are processes, they are not things. The woman that you knew yesterday is not there today. So much water has gone down the Ganges; she is somebody else, totally different. Relate again, start again, don't take it for granted.

I understand we all dont want to know just why relationship end, rather want to know how to prevent it from breaking. Afterall, knowing why it breaks is just the priliminary step. In the following post, I will post on the same topic and how to maintain a relation for life.