there’s a movie streaming on the Tubi streaming service, which by the way is a free streaming platform, you do not need to pay a subscription for it, it’s paid for by commercials, and it’s called infidelity. It’s a foreign film I believe from Russia but it has English dubbed in, and it’s about a wife who is sexually frustrated with her husband who has low libido and does some slutty stuff but towards the end of the movie when she gets caught they reconcile but he starts asking her a lot of curious questions about her sexuality and stuff it’s not directly implied that he’s a cuckold but the implication is kind of there. I believe there’s more than one movie with this name but it was pretty good.