I've only had that.. Twice.
And both times, it was a clingy SO who didn't allow their partners any self-time, or even their own opinion.
Too bad I fell out with both friends, as well, over time... The first one proved to be controlling and even blackmailing after a few years (Gosh; I didn't see that coming!) and the second one simply broke off contact because their SO didn't want them to hang out with the rest of the scooby-gang, anymore.
On the whole, I tend to get on with my friend's SO's pretty well, and even count them among my friends pretty quickly, even keeping in touch if relationships fail.
Oh, I forgot this one friend of mine.. She used to date someone I grew to despise, but I only met him after their relationship broke down. So he doesn't count.