My ex texted me, now what?

[Josh]

My ex girfriend who I dated for 3 years texted me today. We broke up in October and havent really spoken since January. I had wanted to get back together ever since we broke up and she found it unattractive. She basically led me on from Ocotber-january and then we decided to stop talking. Around 3 weeks ago I spoke to her and she told me she wants nothing to do with me and that she has pushed me away so she doesn't lead me on. She has posted some things on twitter/facebook the past couple weeks that I think were about me and she may be regretting pushing me away. Well I havent spoke to her since, and she texted me today, it said "Would you like to get lunch/dinner with me sometime soon?" How should I respond to this? and what do you think her intentions are? She knows I have no desire to be friends with her.