Guess I misinterpreted the scene....because it appeared to me that Jen knew JJ was just all upset, had no one to blame but himself, so Jen made sure Eve was going to no longer interfere or prevent JJ & Paige being together.....if that is what they want. However, Jen did warn him repeatedly that it is best to tell the secret himself, that they have a way of coming out, and when they do, it is not good, rather horrible. And she did try and tell him that there COULD be someone else for him in the future. JJ, however,is convinced he could never love another, etc. etc.
So, Jen again warns him, but now, it is up to JJ......and Paige, too. He can try and get back with Paige, and be honest, or whatever else he thinks.Jen has pointed out (and rightly so) that initially, Eve manipulated him. But he knows full well, that after that, he could have walked away any time, but instead chose to repeat again and again.
I think that even if Paige manages to forgive him for "moving on", and they are together again, JJ's continued guilt is going to gnaw at him. Paige truly needs to get to Stamford. !!!