God that is hard. I think you should go out there and just start dating other guys. Don't believe that crap where people start telling you stay by yourself for a while. Yeah stay by yourself by not letting anyone put a ball and chain on you but date. Please date. Dating is very crucial to a person's sanity. What will happen if you close off is you will get lonely and then call him because he is all you know but if you give yourself other options, you give yourself a fighting option.