Trust me...finding out about it herself will piss her off more than being straight up about it. Move into the conversation gently and reassure her that you have no interest, but you feel like you need to let her in on whats going on. By doing that, she should gain even more trust than she has. As for the X, if she comes around again, just tell her to bugger off nicely but be firm. If you truely have no intentions of liking her that way, its the only way. Seems like a friendship will only put her closer to you like she wants. I think she just dont want you to be happy with someone else but its kinda late for that 10 yrs later, ya know? Best of luck bro.

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