Lego

You could build anything you liked because you had all the pieces that were just simple blocks.

But you put them together and made something complicated.

Building it was a lot of fun.

Figuring out how you wanted it

But then once you built it

You didn't have enough blocks left to build something else

So you either had to enjoy something you build

and that was it

or destroy it to build something new and have more fun

I think the same may be true with people

In order to have a relationship with someone for as long as you want, you have to sometimes destroy elements of it and rebuild them, if only so that you are still experiencing the fun of building

The best way to enjoy it is to ignore the rules, it won't look like what was on the box, but you'll enjoy it because it is unique and yours.