Then its time to grow up, people change, interests change, lifelong love and happy life together is and always was a fairytale. Once you are 20 and somewhat independent its time to relax your responsibility claims on your parents. They already spent a great deal of their so very limited life time on you, at least be grateful for that.
This is not people changing. This is discovering someone that you had an intimate connection with and who helped shape your worldview actually has some major flaws in character. Presumably and at some level, you probably followed their advice and made choices that lead you to where you are in connection with their wishes and it should be at the very least a great cause for self-reflection given they are not the person you thought they were.
>Then its time to grow up, people change, interests change, lifelong love and happy life together is and always was a fairytale.
If this is your attitude then you should just never get married in the first place. At the very least you owe it to a partner that expects a real commitment.
Perhaps growing up is coming to the understanding that we have a responsibility to each other regardless of our ages.
Of course people change, but there's a way to go about it that doesn't involve going behind your partners back and making national news coverage in the process. The fact you don't see that difference is bizarre.