With how lovely and emotional the author has written the conflict between these two, I'm very curious to see how they'll write the conflict between Olivia and the others as well. It seems they are able to take their time to really get into each relationship, similar to "There's No Freaking Way I'll be Your Lover! Unless...". So I want to let them breathe and get there.
It'd be easy for Machino to explain why she was five timing them ("I didn't think any of you were real people, just characters in a story") but that would also come with its own problems ("in all your romantic memories with me, I was never thinking of you like a real person with feelings, just as a capture target etc.")
Machino!! How could you cheat on such a cute villianess??
Jokes aside it was cute seeing her and Sophia resolve their conflict and Sophia giving Machino some confidence in her own feelings. Not sure if Sophia will end up as the 'primary wife' but I hope she does.
This is actually going to get really messy, yes Machino made those in game choices for Sofia, but she also made similar choices for the other girls. so instead of an oblivious harem mc who is not really at fault, its an mc that actively pursued all of them (ie a player)