My boyfriend has cheated on me multiple times, only in the form of being on dating websites and texting other girls while we are together. i often find myself having nightmares about it or even just feeling very overwhelmed with the thought that it will happen again. certain things that have happened in the past related to his cheating such as an old friend coming back into our lives, trigger's my stress and anxiety. i don't know what to do to help me get past this and be able to be in a healthy trusting relationship with him again. or even to to calm my self when i am triggered by something to not just have a breakdown/ freak-out moment. can anyone help?