If you’re a w**** who fucks and steals married men, how you got him is how you’ll lose him. You did his wife a favor but it also cost him his children and grandchildren and whether you think so or not, at some point he is going to end up resenting you when he grows tired of you and your possessive b******* and of not being able to be around them like he wants to be. Look at how fathers day was for him. Your stupid “best dad ever” card and presents didn’t make up for them not spending the day with him since you’re in the picture. If he really was the best dad ever then his kids would have been there and done something special the way they used to before you ruined their family.
Enjoy him while you can because your days with him are numbered, whether your delusional a** thinks so or not.