We're not here for infinite variation, just an occasional change, so we don't have a problem with just seeing one other couple. We only see each other about once a month so it doesn't really get stale. For us, FWB is what we want, learning another couples wants and needs, not endless variation. At the same time, it's different strokes for different folks and what works for one may not work for another. Just because you can have endless variations, doesn't mean that it should always be tried. Some things just don't go together...like tuna fish in green jello, orange juice and mint ice cream, or popcorn and catsup. Just because you can have some variations, it doesn't mean you always should.