This is a very specific type of scenario in my opinion. A few people asked me this question. I have not fully decided to be for or against it. When we are at that stage of the story if I feel like that flows with the narrative, then probably.
This is just for me, take with a grain of salt.... I find when 'cuckqueen' situations occur OUTSIDE a swinger context, they feel super unrealistic in games. Like they're a haremlovers fanfiction construction to make things possible, a plot device. Not saying there aren't women in RL who are like that, but it's a vast vast minority, certainly smaller than the % of guys who would willingly sit on sidelines.
On the other hand, in a swinger context, I think a lot more women would get enjoyment from their husband/bf with someone else. Swinger context meaning maybe the wife/gf already had her fun with another guy (or had the option to and turned it down), but is now enjoying watching husband/bf with another woman, not the above strictly asymmetrical setup.
