Will my niece's ex come back to her?

my neice wants me to ask another question do you think that he will come back and beg her back one day.

Hmmm... personally, I don't think he will. Guys like him tend to look for 'the next best thing', and unless your niece is prepared to sell herself short to this guy, it's best she just tries to move on with her life.

Besides, after all he's done, if he asked you back, would you *really* want him?