Should I block my ex girlfriend from Facebook?

This really depends on your relationship with her now , some couples stay friends or close friends after they break up , while some dont talk or see each other anymore afterwards . Sometimes we regret relationships that we've had and that it was maybe a waste of time or the best times of my life that ended . But really it depends on you , how do you feel about her now? , are you mad , sad , happy  heartbroken about the end of this relationship , and how do you feel about her now , do you still want to be friends? , do you want to just know her as a stranger or just someone you for example see everyday at work or school or whatever?, if you do think she isn't doing any harm to you keeping her on facebook is fine , its not like you have to talk to her , if you guys are still close friends or friends sure keep her on fb , or if your the opposite you completely regret her or don't want ot have any source of communication with her or do not want her to communicate you anymore then you can block her , but honestly if shes not going to talk to you or comment on something or piss you off then there isn't a point of blocking her unless you really want to forget her or really dont want to be tempted to talk to her or something then sure you can block her . Sometimes couples break up and they completey hate each other or regret the whole relationship but although there has been bad , remeber the good memories its not bad to remember the good things you did together , unless you may have a new girlfriend or its really bothering you . Good luck on your decision :)