The platonic life partner

What?
Exactly.
It's this, if you're interested.
I find this concept intriguing. How does it work? Why the label? Why can't you just be life-long friends.
The platonic bit is confusing. Hmmm.
How does the committment bit work? Like, you live together and share your life like you would with someone who you have sex with but you don't have sex. This confuses me too.
It must be said that I'm one for pigeon holes, so my poor little boxed up brain is trying.
It really is.

Even though I don't really understand how it all works, I started thinking about who my platonic life partner might be.
It's an interesting thing to be thinking about on a Friday afternoon.