Dear Claudiii:
I don’t know how you can solve the problem of feeling distressed about working with your ex boyfriend. But regarding what you wrote last in your post: “how i can stop being so jealous, control, insecure…” I am thinking- psychotherapy? With a good psychotherapist??? Some insight and skills learned in good psychotherapy can do wonders for you- I believe so very much because you are showing humility and motivation in this post, a willingness to look into yourself so to improve your functioning and your life.
Take care:
anita