The one piece of advice that I can offer is that as long as you continue to give him what he is missing when he needs it, he will continue to come back. Again and again. He is cake eating. Going to fill desires elsewhere when needed, and coming back to you to something these other women seem to not be able to fill. This is a very common symptom with a WAS.
Unless you make a change in your view of your X, this will continue. If you are OK with that, than so be it. If you are not OK with it, you need to make a change. You need to stop making yourself available to him, emotionally or otherwise. You do not need to take his phone calls, you do not need to be his crying shoulder when things are not going his way. You must drop the rope. If he calls, let him leave a message, then you can decide based on the message if it really is worth calling back. Most things can be discussed through an e-mail or text though. Remember, you can be too busy to take the time to talk. Even if it is only because you are taking a walk to think to yourself.
