I'm not so sure about having someone else fix your problems but I agree with some of the suggestions given. Shielding yourself is very important. I have a basic spell I can give you that is very powerful if practiced regularly. I feel as though there is a sense of fear that is feeding this. Sometimes we allow things to influence our lives, almost like giving permission. Whatever this is, is hidden deep within. I would suggest some cleansing meditations. This guy doesn't seem like he is in the right state of mind, or this woman. I know walking away is difficult, but it might be in your best interest. This girls soul does not feel like one who wishes you well. Now if an innocent is in pain... like this guy you have history with.. you can use a focus to help filter whatever energy she is placing on him. This is about intuition, practice, patience, and will. Let me know if you are interested in any of the suggestions I've provided.
Wishing you well.~*