I think THIS situation should be what your working on in Therapy.

How the jerk feels he can just come and go outta your life on a whim? No I'm sorry hes playing some kinda game or maybe has numerous people he does this too. That guy sounds like a complete ***.

Grieve the loss of the love you felt for him working in Therapy. Learn what a healthy relationship is like , Love and Respect and Honesty.