Dear BookWorm:
You wrote: “I feel foolish and like a 16 year old high school girl”- we don’t grow out of our need to love-and-be-loved, to connect, to attach, not at any age. Not that I know (exceptions possible maybe).
I suppose you stayed in your marriage for so long because of that need and so, this need in you is very strong. No wonder then that you focus on the one possibility, this man. Because he is the only possibility now that you are separated.
Having a second possibility, a more promising possibility, maybe two or more possibilities will help you to let go of this one.
anita