First you are doing way too much talking which turns out are lies anyway. You tell her you guys are a done deal but in the next breath you are hoping for recon. Don't you think she can see right through it. No more talking!
Second you know way too much about their relationship and are trying to you use logic and reason to indicate there relationship won't last. Why do you think she wants him? Because she can't have her way with him.
The disrespect she has shown you is about as bad as I have seen on this board. If you don't change that she will go through 10 other males before she turns around and takes another look. Remember, no one will ever do or say anything to you that you don't allow them to.