As I see it, if MC breaks up with her, then he burns his ships.Oh Yeah I forgot Melody starts with a GF who we immediately break up with and dislike. I think that is what happened with Nicky is that everyone saw her as Bethany 2.0 and decided she was shit to be discarded.
So the very first choice with GF here was "Hall Pass" or faithful. But Nicky hate prompted them to remove that. To reveal her characters future kink. And to offer the full break up, don't want her at all choice.
I was taking hall pass for certain but I didn't think Nicky as written deserved all that.
IMO
There will be nothing for MC to return to. No entry level job, no GF.
He then basically have decided to stay in Sunshine Bay.
For my part, I couldn't break up with her fast enough.
But I admit it was Bethany in Melody that popped up in front of my inner eye.
Besides I never liked Nicky.