The only way to be sure is to way that a babe actually begs to be with you, but most of them are pussies (in the sense of need being aggressive enough to go out there and be point blank honest that they want you), and most of them measure your interest on how much you are willing to bend to have her (again, it has nothing to do on how she cares for you, but how much her ego can thrive on it, and the potential notch on the belt factor, typical girlish, not womanly, thinking), well, you just have to tell show her how much of a man you are and drop the gentleman/friend act and tell her to fuck herself. At least you`ll have your dignity back. Sure, you burn the bridge for the future, fuck, but she gave you the match for it. Good hunting.
Well, lately I’ve been ignoring her and it feels gooooood. I’m not ignoring her in the sense that if she says “Hey Chris,” that I don’t say anything back. But seeing her around campus and in the dining room, I don’t look at her at all. And oftentimes I can see her outta the corner of my eye staring at me.
Payback is a bitch. I know that just not looking at her isn’t really payback at all, however, it feels good to know that shes probably thinking, “Why isn’t he looking at me at all? What did I do wrong?” Muahahaha. You know what you did wrong, bitch!
Chris,
You crack me up w/ your last comment. 
It’s definitely time to move on. And I don’t think that it’s ever possible for ex-girlfriend/boyfriends to be good “friends” after it’s over.
Anyways, good luck w/ everything. I know that you’ve been very sweet to her, so may she regret her decision.
Cheers,
Stella