I am a very bad person...
I did something that I've done before and probably will do again.
I'm thinking inviting her to come to town for the weekend was a bad idea. Why did I do that? Here's why: We went out for about 1.5 years, which is quite a long time, and we owe it to each other to remain friends. I can't just toss aside our experiences together and pretend they didn't happen. I think if you try to forget things, you start to regret them, and eventually start to dislike that person for having 'wasted' all that time and energy. Never put yourself in a position to hate someone else, it's dangerous.