staying friends with a female who rejected me, but begged me to stay friends with her twice after leading me on by saying I'm the perfect guy...

,she has always found me attractive, and she wants to find someone as good as me...To top it off, she's started to date other guys after saying she still only has feelings for her ex which was her reason that she didn't want to date or mess around. I'm happy she's healing, but the emotional cost to me has been unbearable for some time now and has lead to unhealthy coping habits. Not to mention I'm now training her at the gym and she constantly keeps in contact online and wants to hang out...but only when it's convenient for her. What would you do in this situation?