Separation Anxiety Due to Abandonment Issues..

Okay, as a child my father left me and my family to go live with a new woman and her family.

Fast forward to me being 15, my brothers left me to live with my father. My mother would leave me home a lot to go stay with her boyfriend. I felt abandoned.

Here I am 19, my mother is in jail, my brothers are in different states and cities, my father is in a different state as well.

Every time my fiance leaves I cry. I don't like watching him leave. It hurts me and I have panic attacks. Is it because I felt so much abandonment when I was younger? What is wrong with me?