<human>: My girlfriend of one year recently cheated on me with an ex-boyfriend. A friend of hers secretly came forward and showed me all the evidence. It was a shitty situation.

Instead of dumping her the normal way, I just disappeared. This was easy to do because I was traveling quite a bit at the time and ended up moving to a different area shortly after finding out about the cheating. I deleted her from Facebook, and ignored all of her texts, voicemails, emails, etc. I went completely "dark." 

It's been three months since and she STILL tries to contact me. She knows why I dumped her and has attempted to apologize numerous times. She regularly sends me lengthy apologies, yet I never reply.

I guess I feel like an asshole. I think closure's overrated but in this case, I'm feeling like a dick. She's convinced all of her friends that I'm still hers and that we're going to get back together. 

Will she eventually get the hint and fuck off or do I need to actually tell her we're done?

Can you give me a shortened version of the text?
<bot>: Girlfriend cheated, I disappeared, she still tries to contact me to apologize and thinks we're getting back together in the future. What do I do? Am I an asshole?