Hi Kate and everyone else who has gone through betrayal and disappointment,
I am wondering if it would help if you gave permission to your ex to leave, in fact not only give them permission, but thank them for exiting your life, and make space for love to enter it.
We all know love is not something we can control, so let us not settle for pity in it’s place. Let us not consider anyone duty bound to love us, instead let us put that onus on ourselves.
Sorry if this sounds unrealistic, but I have found this way of thinking helpful.
Hope it helps you.