Emotional blackmail

She sent me friend request on fb and i added her. She is my sister's friend but my sister doesn't know that we talk to each other. After talking to each other a couple of times on fb she took my number and messaged me. On the first day she asked me to meet her near her home so i went there and came back as some neighbors were watching. She asked me to meet daily while she is going to her office and company her till her office. She used to so lovely. She said she has no friends in boys at all when i asked her. After few days she suddenly stopped talking to me and said she will be not having her mobile and can't talk to me. After few days i found that she has many friends but she is disagreeing. Then few days back she got a boyfriend. When i asked her to promise and say truth that she is not talking to any boys as she is saying that now she is not talking to anyone guy she just ignored me trying to escape. Now when i forced her by messaging and calling she took that as advantage and lodged a complaint against me to she team as i was harassing her.