/MSG/
Uwaa OmO
http://www.christianitytoday.com/ct/2004/februaryweb-only/2-16-41.0.html?start=1
Doesn't sound like a stable situation to me.
Considering the nature of the source, and the big intellectual leap you're making (multiple partners=less stable especially since the same could be said about many straight couple), I find your claim questionable.