How are there mixed signals? She never replied to your continuous desperate messages and has moved on with her life.

Obviously, there was a reason why the two of you broke up. And since that the only thing that has changes is that you have been desperate, you seem to be unable to move on, while she did move on. How is that a reason for her to go back to you?

The only thing she did was post things on Instagram that relate to the year you were together? I don't know what exactly this means, but she cannot really deny that part of her life. Maybe she did have a lot of fun with you, while it lasted? I mean, you were together for a year.

You already 'made the first move' by emailing her. And when you wish her a 'happy Christmas' you deliberately put her in a bind. If she doesn't reply, she is rude. If she does reply, she does give you mixed signals. I mean, if she had said "Happy Christmas to you too." back to you, you would have told us "She said this and this. She is sending mixed signals. Maybe she does want me back. What do I do?"

Some people are in a romantic relationship, but then become friends. That must be very difficult to do. So the romance in both must fizzle out exactly at the same time. And both new partners must be ok with their partner staying friends with someone they shared intimate feelings with, had sex with, and now still share intimate feelings with. I am sure it can be done, but I do wonder how.

Clearly, it isn't happening for you with her.