
I recently learned about the stag and vixen terms while looking into the same question. It is nice to have a word for it.
I also enjoy some dominance of my partners when having sex with other people, just as I do in other sexual contexts. But my most prominent feeling when my partners have had sex with other people, with or without my involvement, has just been a joyous “Hell yeah, we got some! Go team!”
Nice. This looks to be cosplay of the old Magic: the Gathering card Earthbind.