I've tried settling this in non-con times, since we attended until recently the same university (I graduated, she didn't ^_^).
I used to date her. And things got weird, she got in some trouble, I tried to help, she accused me of stalking her, she got screwed, kept blaming me as a stalker just because I was concerned.
Now, every year, I have to deal with death glare/threat from not just her, but her idiot boyfriend, her clique, and anyone she makes friends with during this year's con. Basically, a "you try to hurt our friend, we'll kill you" when I'm like "stay the hell away from me, and where I want to hang".
Life sucks for me at con for the last 4 years or so.