Dream of

I have nightmares almost every night that I have to get back with two of my ex partners, when I really don't want. to and know it is totally wrong for me. My husband hardly ever features in these dreams and if he does he is usually on the receiving end of violence, often extreme, from one of my exes. Often these dreams are really terrifying and I wake up extremely upset. Any ideas what this means and how I can stop it? Many thanks.