<human>: My girlfriend (19f) and I (20m) broke up after nearly two years of dating this last May. A few days after this happened, she texted me saying she'd "love to reconnect." A few days after receiving that text, she sent me another saying she'd "love to talk more and learn from [our breakup]." 

The problem is this: every time I've brought it up to her, she has made an excuse as to why she can't and pushes it off, sometimes upwards of a month. Her excuses have ranged from going on vacation to still trying to find herself months after. I blocked her on Facebook in mid June, but before that I noticed a guy who had been posting things on her wall and they had kind of been flirting. After a little digging, I figured out that they had known each other at least since the end of April. When I asked her if this guy had anything to do with us breaking up, she told me that she "didn't even know him till after." Naturally, I suspected some shadiness on her part, but I didn't know how far it went, and I still don't know. They seem to be involved with each other, but I can't say if they are officially dating or not. 

As of now, I'm waiting patiently for her to get in contact with me to have a conversation that, considering just how much time has gone by and everything that's happened, I'm not sure if I even want to have anymore. I go back to school in less than a month so time is running out fast.
My question is this: why would she be putting this conversation off for so long and what do I do about it?

Can you summarize the given text in a few sentences?
<bot>: my ex-girlfriend wanted to meet up and talk, but has been pushing it back for nearly three months. Why is this happening and what do I do?