Boyfriends bring several things to the table: emotional, mental and physical connections.
Friends don’t. Friends only bring emotional and/or mental connections. So they’ve gotta be stellar at maintaining those connections.
They can’t off-set their deficiencies with sex.
But take away that magic maker and they’d never meet the minimum threshold for friendship.
That’s why boyfriends will never ever be friends after a breakup. They aren’t worthy of the title.
Also there’s that pesky problem of backsliding. No matter how much you think you’re over each other, inevitably one of you will backslide.
Then you’re in a mudslide of emotional muckiness.
Either way a rollicking disappointment.
Better to cut the cord and move forward.