LF Recommendation Woman seeing her partner having sex with another woman and women making eye contact

I was watching Oppenheimer and there is one scene where his wife imagined him having sex with his former girlfriend and then the other woman makes eye contact with the wife.

I found that super hot and I would like to see something like that in hentai. Either with the wife or girlfriend being forced to watch her man having sex with her lover or she actually enjoying and then joining them.