For those that have had a threesome with a SP and your significant other, how does it work with condoms? My wife is on birth control and we've been in a long term monogamous relationship. We've both been tested for STD's. Would I still have to wear a condom with my wife during the threesome? Part of me understands why I would, but part of me would think it would be weird to have to wear a condom with my wife. Anybody been in this situation before?