Well, in my playthrough, he is driving her there. I have not finished(just got to the old diner, on the second day of their trip) and they mentioned as they set out that he will not go to the cabin right away but let her see her mom alone first.
Edit: OK, I see what you mean, the MC will not appear in "The Cabin" game. She just quickly visits to try and get their mom's approval, then they will go back to his home to live happily ever after, raising 10 daughters for him to rail, as soon as they are of age, heh.
Also, it is real love in my playthrough. Turned down peeking at the las in the clothing store and admitted the waitress was sexy but turned her down in the bathroom. That is love, right there. Now if Emi wants him to fuck others, fine but she is going to be a one dick woman, his only. She can show off all she wants but no other dude gets to touch her. Maybe some lasses can touch her during threesomes.