it is a personal choice. if seeing them move on and date new people is something that you will not be able to deal with emotionally, then probably not.
If you still have feelings for them as more than a friend, then chances are it's going to tear you up inside, watching them go on with life, while you are stuck thinking about what could have been!!
If you are over them, then yea y not??
Do you keep in touch with any of your ex's: click here to read the entire thread »