I'm not so sure about that, and it's not like he knew about the pregnancy and decided to go "buy cigarettes" and bail . I think it might happen.
I think Erynn will embrace him too, and welcome having a extended family with John and Iris.Actually, it was Erynn who was looking for her father, so maybe acceptance will come to her naturally and pretty quickly. As for Melissa and John, they’ll probably have to meet anyway to discuss how to act around Erynn, so maybe those innocent meetings will lead to something more? And about Emily, John, and MC — Emily has already seen how MC and John act around each other. They know each other really well, so the real question is whether John will actually expect or ask MC to call him 'Dad.' Probably not. So acceptance from the son’s side will also be important
Not only John didn't ditch her, Erynn doesn't have a father who raised her... she's not replacing anyone, no one will feel slighted by her embracing this guy she just met.
This makes things much simpler than the MC situation of having to deal with Andres-Santiago.
And John already showed his character by agreeing to help her when she was a stranger, and she has already taken a liking of John.
Melissa-John... i can see it happening for players who said "no" to John-Emily, in this scenario there's no MC-Melissa, Melissa and Emily didn't have their fight... and John is 100% free.
They could easily meet as friends, discuss timetables, things about Erynn... and hook up.
If Emily-John happened... it's a bit more awkward.
If both Emily-John and MC-Melissa(fingers crossed Justaphase
Emily-John i'm not sure it has any future, Emily has just been reminded of how the Intertwined world works
She went on an innocent date and hurt her BFF feelings, would she date the guy while he needs to spend all this time talking to Melissa about their daughter? Is his head even on dating right now?
Plus, if you have a Erynn active Emily already knows you are fooling around with John's new daughter.
John also knows about Iris feelings... and can probably guess about Erynn.
If it were to happen, i don't think John-MC relationship would change, the guy is already an adult and has 2 fathers... even if he was to start living with Emily i would call him John instead of dad.