Most Helpful Guy
It's never happened to me cause I've never been in an 8 years long relationship. The longest I had was 3 years and when I broke up with her I was so happy it was over, just a huge sense of relief and a feeling of very deep satisfaction that I had closed that chapter of my life.
I didn't cheat on her though. I don't do that. It just wasn't love anymore and I was sick of her.