<human>: So my ex and I dated for about three months as she was finishing her BA. A week after she graduates we break up. She tells me that she doesn't want to give herself to me (emotionally) but is still very attracted to me. The entire time we dated she was sort of cold and distant-- mind you it was her idea that we date. She says its hard for her to trust and let people in. Keep in mind she is very Christian and still a virgin. I myself respect that and hold pretty traditional values myself. So I wouldn't have mind waiting either. I say this because I don't think any of her motives were to intentionally use me or hurt me. 

It was only three months, so I wasn't to distraught by the break up. However, it's been nearly two months of NC and I still think about her everyday. I cannot get her out of my head. Im either mad at her and the situation or I wish we were still together. Time is helping but I just want to be done with this. 

Unfortunately, I do a lot of public speaking on history and what not, and have been told that she is going to hear me talk next week. She has been out of the country for the last two months (left a few days after the break up) and all of our friends invited her.  After my talks I normally do a Q&A and then lunch if its a small venue. I already know we'll be doing lunch and I know all of our mutual friends have invited her. 

I haven't seen her or talked to her since we broke up. I really don't know if I want to see her, but I really cannot get out of it. I know I shouldn't worry about this and just play it "cool". But any suggestions on making this less awkward?

Can you summarize the given text in a few sentences?
<bot>: ex is getting back from holiday. Wants to hear me lecture, and then have lunch with me and our friends... We haven't talked since the break up two months ago... How do I make this suck less?