So was I wrong to cut this girl off like this .?

Soooo a girl lead me to believe that she didin't like her ex boyfriend she told me she likes me . Then when I see her in the hallway hugged up on her ex she decides to get sorry and apologies. . . . She was playing me from the start . So was I wrong to get mad .? Or should she have been told me . . . I would ask her who he was at first she said nobody that's my ex. She said they broke up over drama. But you hugged up on him like that. She lies to try to get me back and that made me even mre angry . . . So was I wrong or not.? I had to force her to tell me who he was.