Loneliness from abandonment is something I am quite familiar with unfortunately although I am not you and would not want to trespass the absolute uniqueness of your own experiences.

I use these Forums frequently to ease my loneliness and have met many concerned, empathetic and kind hearted people here. I wish I knew how to be of help to you but sadly I am in a similar situation. I hope you will feel welcome to lean on all of us here for support during the lonely times. Loneliness is terrible.