Do what your bf says and go to the police. this is harassment, i would just respond once more telling her that you do not want to talk to her or your former best friend and if she will not stop contacting you, you will go to the police and report it. Then if she keeps harassing you, go to the police
I don't know about the police where you are, but I doubt the police here would do anything. Sending annoying texts, however bothersome to you, isn't enough for the police to care that much about. If she was explicitly threatening you, that might be a different matter.
This girl has clearly got jealousy and insecurity issues. That's a shame, because it's costing both you and this guy your friendship, and there shouldn't be any need for that if you are both keeping it strictly friends, hands-off. But, unfortunately, some girls (and a few guys too!) can be like that!
Given that you and your friend have decided to stop spending any time together, there's not a lot else you can do. Just ignore and delete the texts. Eventually she'll realise that you're no threat to her relationship and you're not even seeing him any more, and she'll stop bugging you. Either that, or he'll realise she's a jealous control freak and he doesn't want that and he'll dump her!
Its obvious that shes jealous of you. If she keeps harassing you and sending you text messages, why don't you change your number?
Change your number. sammy here it is considered harassment. So she can go to the police and file a report. The simpler way to handle the situation is just to change your number.
Ignore her, and in time she will give up jo
Ignore the rants of this crazy lady... and, change your number as well. But, if the harassment persists, contact your local law enforcement. And, if you do change your number, don't give it to that guy friend... because she obviously got your current number through him.