My guess is that Ep 12 will end on James coming back.
He's definitely coming back at some point.
The argument against that, though, is that unless the MC is on Bella's path he doesn't really know anything about James.
He knows that Bella is married, but that's it.
So on the other routes it's not a huge event like it is on her route.
So there could be different cliffhangers on the different routes.
Keep in mind that an episode-ending cliffhanger can't be something that only happens with specific actions.
Sage finding out about the MC's affair with Jade, for example, can't qualify because plenty of players will not have done that.
Bella route would be James coming back.
Maya/Josy route would be one of them, whichever did not get the I Love You or spoon sleep after the Bella panty party, breaking up with the throuple.
For example, if you told Maya I Love You or spooned her then Josy would leave the relationship since she is now feeling like the lesser part of the three-way relationship.
They would make up and get back together in a future Episode, but the M/J route has built up this particular bit of drama.
Not sure what cliffhanger could happen in the Sage or Jill routes, those are pretty solid right now, but DPC can manufacture something.