>>Sometimes, you’re glad it’s over.<<
I agree. But if you are glad it is over, why would you be friends?
You live in the same town, work the same job, hang out in the same hobby/social circle, go to the same church, are married to relatives etc.etc.etc.
It’s not saying ‘OMIGOD! He is my BEST friend in the whole word forever!’ it is saying that you can have he and his wife over for a cookout with all your other friends. Or call him to for to ask a question about Cub scouts. Or chat for 5 minutes in the Kroger checkout line. It means you’re better friends than you ever were lovers.