It is funny and also interesting how many points of view PE generates. Here are my 2 cents, if I get the proverb right:
Some posts are disregarding what we learn in the game about the characters and then going onto some wild theories. For instance, we learn at the beginning that the MC and Julia are a happy couple, the only troubled area is the bedroom. What happens quite often, after about a decade together, sex has become a bit routine for them, it lacks earlier passion.
The MC, unlike what some discutants insinuate, is not bad in bed! We can see this on the paths where the two share fantasies. Afterwards they have a really passionate romp, both happy they rekindled the flame. We also can see it with Jasmine, e.g. the motorcycle ride. It is the routine after over decade together which is responsible for the bedroom problems.
If the MC and Julia share their fantasies, the tone of many scenes changes. Our couple learns on most paths that these fantasies and the "Game/Act" they play to help Cornell rekindles their sexual desires. If you explore these fantasies before and during being at Cornell´s house, it is pretty clear that our couple stays close and in love.
Even if the MC goes onto the Jasmine path a bit, this is not too problematic. I estimate some swinging/sharing down the road here, a complete couples switch only with specific decisions to be made.
I have saves with shared fantasies, high CP and with/without Jasmine in the mix. On both the story makes it rather clear that our couple is still in love and has fun experimenting how far they want to go, neither Cornell nor Jasmine a danger for the relationship.
You get on the cheating path mainly if you never share your fantasies, fully go for Jasmine, but intervene often with Julia and Cornell. So if the MC goes prick, we see the cheating path.
There is also a faithful path here, where the end will be Cornell´s family leaving pleased,the acting successful and nothing happening.
I do not disregard a possible orchestration of events by Cornell (not Julia!), but I doubt everything was planned beforehand.
in this post you are behaving just like the people you just accused of plotting, I am someone who has seen very strange things from the characters in the game, if you want I will give you point by point the steps where your reasoning is dismantled:
the first Mc and Julia are not married, they have been living together for a while but are still only engaged,
we add that it is Julia who puts pressure and agrees to help Connnel, we have the two options as Mc, but in any case they are not needed, because Julia decided for Mc, where he is very reluctant, precisely because he knows Connell who does not respect any woman, so how can we assume that Mc plays the game well if initially he doesn't want to, then with every strange movement because MC is always nervous and jealous, it's not sharing behavior etc. and we are still in the first phase.
then we have the real problem of the couple already before Connell's entry, where MC cums almost immediately when he fucks and many times he left Julia without enjoying himself,
in the scene of Connell's speech on the request, if you pay attention, Connell holds Julia's hand right in front of her as if he were only talking to her as an interlocutor, he gives MC even slightly vague looks,
then we know from the descriptions that Connell is always surrounded by beautiful women, therefore why does he need Julia, when he could have others, then why coincidentally does he say that when his mother asked him for a photo, coincidentally he had a photo of Julia in lonely, and we're only at the beginning, but don't worry, I won't give the whole report, now I'll limit myself to the other things that are too obvious, and I'm talking about what seems like the beginning, where MC and Jasmine haven't even touched each other yet, let's talk about the need to have a password to understand that they are exaggerating, really, basically if the word didn't exist you mean that Julia, no Connel, wouldn't stop, so she goes through with it if the word isn't said, strange, this leads to the look that Julia shows when is with Connell in front of the family, shows intimacy as a slut, no as a girlfriend, passionate kisses with wrapping her leg on Connell, or never taking a step back in stopping Connell's hands when they are not seen by the mother, I can tell you I repeat thousands episodes that show the complete opposite of what you are saying, regardless of which path you choose, because many of these interactions are already at the beginning of the story, then we have the most sensational cases, which some say are imaginary, other bullshit, MC gets kissed by Jasmine, a kiss, and the following night we notice the scene of the condom full of cum coming out of the sheets, and then disappearing, the cameras moved by Connell, the groping in the pool, the mega birthday present, the naked photos that Jasmine takes of couple in hot poses on the sofa, if you want I continue with big scenes or less obvious scenes, if I haven't been clear, I repeat I'm talking about most of the first minutes of the game where MC and Jasmine haven't even touched a hand yet.