How to deal with Ex-boyfriends , ex-relationships ?

Last week end I recieved this sms from a friend ...lol... It's so cute I thought I share it with you. She had bump into her X during someone's house warming party. Obviously being together for so long people do get to acquire many "mutual" friends along the way. And when a couple split up you will naturally bump into each other sometimes during some of these occasions. Only way to deal with it is to -let go- I guess. Or treat it as if you were drunk the entire time ....lol....