yeah im hearing ya Sian..I think you would have to be in a truly loving 100% relationship to even attempt it.im single as ya know,and have to look backwards,but im sure id be miffed if i actually saw my man with another woman.All kinds of jealousies would rush through my head.There are too many instances of it all starting fairly innocently ?? but then one of the partners developing feelings for a stranger.
i suppose it is up to the individual (s) ..
so i think therefore,that maybe an open relationship would be the preffered thinking. Where its all done in the open,but behind closed doors.!