Its good that your sister has realised what kind of a person that guy is and now when she wants to move out of the relationship, he is not letting her do so coz of one simple reason. He knows deep inside what kind of a person he is as he can cheat anyone but cant run away from himself. He knows this well enough that he wont get a person like your sister who can hang around with him (at least for now). The moment he finds another one he will try to dump your sister. He is nothing more than a leech.
Ask your sister to face the things boldly and give him right on his face in front of everyone that he is no good a man even and she cant imagine her life with a sucker. Tell him if he is a man of character he should stop following her around and walk away. If still he doesntt, take help of police who will st him right.
The early your sister gets away from him, the better is for her life.
God bless!
Regards.








