Hi everyone!

I know this is a very odd thing to post about, but I just needed some advice. So, I have been with my boyfriend for almost a year now. Everything has been going great, but starting last week this girl has been harassing me. She claims my boyfriend has cheated on me with her when that is not the case at all. He has had her blocked for 11 months. I know she had come onto him in the past (before I was in the picture) and he had declined. My boyfriend has told me about her a long time ago and how he absolutely disliked her. Recently, she has been messaging me calling me a worthless cunt (just really rude ect). She’s been telling many people lies about me which is causing them to dislike me. I have never messaged her back since I do not want to feed the fire. Today, I saw her and she began screaming at me, and telling me how she wanted to beat me up. Luckily, I had a friend with me to get her to stop as I walked away. I’m very nervous about it. Should i say something to her or just let it go? Thank you❤️