OK so after calling my ex every name under the sun for sleeping with my best mates, strangley we've started becoming friends again. She called me on my birthday and called me ffrom oxygen festival saying she just wanted to talk to me as she kept thinking about me and wanted to see me when she came down to london. I just feel like a mug though for even talking to her after everything that has gone on, more annoyingly is that all my feelings for her have come back and I really want to be with her again. Which is rubbish because I know I just cant! What do I do?