I think so, but when you start hanging out by yourselves it generally turns out to be soething else. My coworker has told me it can never work...
Theoretically...Yes! Reality...No! Humans are irrational!! Plus opposite sex attracts! One day, either side will complain about their other half...and then the 'friend' will be the one listening and giving advice... And most of the times, it's not exactly best advice for the couple, but for himself/herself!! If you know what I mean....
Well...can of course....at the end, they just end up in bed 'naked' trying to console each other.......