I put a line in the sand and punctuated it with letting him know I had been in contact with a lawyer.
1. No contact - at all - never - ever. If he ever had the audacity to tell me his phone pocket dialed, texted or even thought of chickie again he was out. If a thought bubble of chickie even formed above his head, I was done.
2. If I ever caught him in another lie, I was out.
I think another thing that helped was that I did not hide the utter sadness, anger, rage (puking), etc. from him the last time he contacted chickie. It also helped that I 180'd him hard and I let him know in no uncertain terms that HE would be working his *ss off for years to ever deserve me. i went at him strong and confident even when I didn't (don't) feel it.