If your relationship were a book, would you skip to the back to see how it ended?
Absolutely. I might not even read the beginning.
I would read the last page, and then go back and read the whole thing.
I'd read the beginning first, and if it were going well, I'd peek at the last little bit.
I wouldn't peek, even though it would be tempting.
It would never occur to me.
How long would the average "Book About My Relationship" be?
Multi-volume encyclopaedic novel set
What genre would your relationships fall into. No, you don't get to say "Romance."