Did they tell you it would last forever?

Mine constantly told me, and other people, that our relationship would last forever. She told me she would never break up with me. And my young and dumb self believed her with all my heart.

And then, shocked Pikachu face, she discarded me 10 years into our relationship.

There were plenty of reasons I could've cut off the relationship. She cheated on me, multiple times. She emotionally abused me. She took advantage of me. But, I guess I just figured it was the regular ups and downs of a relationship. I held on anyways. But it didn't matter - she discarded me for less later anyways.

Anyone else have their nex promise a forever relationship, and then break it off?