You should definitely do it! To me it always makes these FICTIONAL games and stories more interesting. The drama and emotions those situations cause in stories makes them way more interesting to me. The internet is literally a treasure trove of content of which you can see pretty much any type of fantasy you want, so just like these people dont understand ntr, I dont understand why just plain old regular sex is all that interesting to them. Im not really into humiliation or cuckoldry but cheating is very interesting to me because it causes alot of emotions, drama, and present/future problems which makes for an interesting story. Obviously some people dont agree but I think you should do whatever you think will make your game and story better. But thats it from me. Best Regards!