Why love ends?

In the beginning there was a happy couple, deeply in love, 2 true soul mates. Until gradually the feeling and passion died out and suddenly we see the other as more egocentric, looking out for his interests and pays little to no attention to our feelings. Actually our spouse only acts as a mirror for our own demands which grow and grow constantly. If we could only take a glimpse inwards, we would find out that we are looking for the same thing – maximizing our pleasure in the relationship and minimizing the effort we put into it. The only way to revive the love is just to revive it.

We must understand that if both us and our partners wont invest the mutual time and effort that will rebuild our relationship then our growing ego would just bury it. Making us loose any feeling to the other and breaking up or just living without love for the rest of our lives.