Can this be seen as legal harassment?

So I have been dating my boyfriend for a year. Before me, he was dating a girl for 5 months and she turned out to be psycho. Has at least 10 TextNow numbers and Instagram pages specially made to talk to him, faked a pregnancy, a suicide attempt, being abused, drunk driving, etc. just BEGGING for his attention. She eventually at least left me alone when I lied and told her we were broken up.

She stalked him for about 9 months but then started dating some other dude. Just days after harassing him for the last time 🤦🏼‍♀️ I thought “cool, she’ll leave us alone now bc she had someone else to obsess over” right? Wrong. She met her match bc this guy is just as immature, childish, and pathetic as she is. Well, over the span of the 3 months or so they’ve been together, this guy has called my boyfriend off her phone twice, claiming that he “just wants to check her block list and make sure she blocks all of her exes”. (Which makes no sense bc she’s only dated one dude). But yet we tell him each time “this is her ex”?

Not to mention that a few weeks ago, he sent one of his friends to add me on Snapchat and “be close to me”. I ended up finding out bc the guy admitted it to me. When I asked her boyfriend, he said that “his friend wanted sex so he sent his friend to my ugly ass to smash”.

It’s honestly just getting really annoying. It’s been over a year of this. The worst part is that they are both 20 and 21.