Sometimes I hurt you, you let me skate through, go on about your day.
It's funny how MC only tells Sage and Jill about visiting Zoey because he wanted to share what he would be up to while they're getting their nails done. Obviously before that moment, MC doesn't see it as a big deal, to the point that he might not have ever brought it up on his own. I would guess that's the case with Bella and MJ. And then of course this pales in comparison to Zoey confessing her feelings weeks later.
It's a difficult subject to broach, your ex wanting you to dump your gf and take her back, but I'm sure MC will go about it in a reasonable way

And if he chooses to keep it to himself, I'm sure there'll be no repercussions to that