PLEASE HELP!!

Hi everyone need some advice, I have just been out to pick my sons Birthday cake up, And as i was going to get the bus, Ex narc pops out from nowhere, I have been NC for over a month, And he comes right up to me and grabs me ans says to me, Cl xxxRE look at me in the eyes i still love you!! I was just in shock but i screamed at him to get off and i told him that there were CCTV cameras every were, and to basically fuck off, Anyway am a bit shook up , am back at home now, Should i get the police, Bye the way this Narc was sleeping with my so called best mate, I have all the proof that's not the only woman as well she was just one of many, through are 13 year relationship. Am spinning at the moment but also proud of myself too, As usually i would have held a conversation with him and he would have been in my home by now, This site and the knowledge i have gained from here is telling me i have done the right thing, ???? AAAAAHHHHHHHHH????? xxx