There is a quote that goes "Love can come from a friendship, friendship cant come after love" something similar, you get it...
I dont believe that. It depends if the couple loses respect for each other. In my life I am still very good friends with my XH (the Texan, LOL). He knows me since I was 16 and although we divorced after a great love story, there were never reasons to stop loving each other as very good friends. K