Asking for a friend. (for real). Lol
If you were no longer with your children's father but you two continue to coparent ...(you never let go the hope of one day being a family again) and you two begin have legit family time with you and the kids...would you feel like it is a lead on that maybe things can go back to how they were before? ( Mind you..he already has a relationship and has a child with her as well).
Eta: "you" as in general, a person.