I have been dating this girl for over two years. Beautiful, intelligent, great, love of my life. When I started seeing her she had been with another guy for two and a half years. The relationship was in trouble and I wanted to be her friend and give her advice and we got closer and closer. We kissed in a nightclub and a few days later he broke up with her like a real cold nasty piece of work in the pub they had their first date in. Within a month we were together and so happy. We moved in together. Six months together I found she was trying to contact him when he phone flashed with a text and his name. She had asked him to meet her. I had to read it and told her immediately. I told her where she goes I go, we are a couple, and I had taken his number so I told him the same. He told me to come too but I then decided the past is the past so I convinced her not to go and we changed our numbers. A year and a half later I decided to go on facebook whilst she was asleep and the computer logged her in automatic. There was a message from her ex asking why she had added him as a friend. I knew he was trying to cause trouble hoping I would see it so I sent him message pretending to be her saying I never bleeping added him. But I looked at his profile and it said there was a friend request sent to him. I think he hacked into her facebook and added himself. She has never changed her password since staying with him. I have blocked him on facebook from her account but now worry what if she finds out? I think she will understand I did it to protect her, and she can't be too mad really because he did it first, but my thinking is do I tell her or wait until he says something about the message? I've seen him around a few times when we are out and he makes us deliberately uncomfortable by staring badly and will probably come over soon. I love this girl I want a future with her not without her and I worry this is a ticking bomb.