Unknowingly found a qos for our ffm

.So me and the girlfriend have a pretty normal relationship, I have a fetish to see her with guys, she has the same for me and other girls. (Lucky guy yes).

So we found a new playmate on tinder, everything went great until we're all naked, and we both spotted a small tattoo on her hip (odd place?) Needless to say we eventually got onto the topic and now the next plan is to invite her friend (he's pretty hung 10in and thick).

Anyways anyone here had any experience watching their wife/girlfriend play with another woman and a BBC? Thus far it's sounded insanely hott, both are on birth control so it's planned to be a big cumulative filled mess, and I'm supposed to clean up