Well, when she likes her more, it is cheating, dude just got cucked, in his own fucking harem series.
I don't see it as cucking especially because this is a polygamist relationship /harem,
Well she might like her more in the sense of sex and stuff like that we haven't really found out much more of how she really feels which I feel like they should have went deeper into that I still stand on it not being cucking,
spoiler
he has a thousand women more or less,
it's bound to happen where they have relations with each other because he's not around or he can't have them all at the same time etc,
if you think it's not going to happen you're greatly mistaken,
punishment is needed sense they did it without his permission but it's not cucking nor is it really cheating in the sense of the true objective meaning,
as long as Marie or maria and Melissa still have feelings for the mc and love him greatly and still respect him there shouldn't really be a problem with them embracing each other when he's not around,
if I was in his position I'd actually prefer that rather than them go out and do it with another dude.
Call it whatever you want tho we are all entitled to our own opinion just wanted to put this perspective out there.
So even the chadest of chads can get cucked, such a shame, weird choice by the author for such a power fantasy
Nah, fuck them and this cuckold. Good luck, guys, I'm out.
nah that is still getting cucked wether its a man or woman doing it, get these 2 out of the harem