Hi everyone. My ex and I finished 1 month ago. Yesterday I talked with my ex in the messanger and he told me he had been going out with my friend for one week and that she used him to make jealous her ex partner. She went back with her partner few days ago. We live in different towns my friend live in same town that my ex. We gave her support when she split up with her ex and this was what she done to me. Worst she told my ex the things I told about him to her when I was upset with him. I don't know what to do but I can't trust her anymore.