It's a catch-22 because you want to tell him that he's a creep but, if you tell her, she'll most likely think of you as being a disgruntled ex (just like xok85xo said). It seems to me that you telling her is more because you were hurt by your relationship with him rather than you trying to be a good sister. I apologize if I'm wrong and out of line but that's just what it looks like. The two of you had an open relationship and he is, therefore, free to date who he wants. I don't think anyone telling her that he's not a great guy will make her think any differently. It's one of those things she'll have to learn for herself.
__________________
ZTA
|