Thoo you are thinking that by marrying someone would be a great way to forget about your EX. But worry not, sooner or later, you'll appreciate most of your moment with you soon-to-be wife. You'll love her more and you will completely forget about your EX. Like they said no matter how long you were with you someone, if fate says so, then she is not yours.

Same case with me, I had a GF for almost 8 years, but I ended up marrying someone who I only went on a date for like 3 times?

But she is the best person I ever met compared to my EX Gf that I have dated for almost 8 years.