My best friend is now my ex boyfriend

Capri

I’m 20 years old, I’m about to graduate college, and I’ve been dating the same guy since I was 14 and he was my best friend since I was 13. I broke it off last Thursday. Everyone told me that I can’t break off something that has been part of my life this long. There is so much more to the story to tell but I just want to know what you guys think. Did I just throw away something I should’ve tried to save?