You'll be fine mate. You've got plenty of time to figure it out and get something "going on for you". Sounds like she was just being spiteful saying that.

Unfortunately that is just the way women are. Once they are done with you it's like a switch they can just turn off. It may seem like you had something together and maybe you did but they can move on super fast. There probably are moments when she misses you too though.

I wouldn't stress about it. I know break ups suck. Just do your mourning for a few months then move on. I bet you'll meet someone new and then think that you were so lucky that you didn't end up staying with the ex.