<human>: Can you condense the text into three sentences or less?

Me [M20] and my girlfriend [19] have been together for about 7 months. Her exboyfriend [19 (I think)] texts her periodically and just harasses her. She knows he does but she keeps talking to him even though it visibly makes her upset. She told me today she texted him "Happy Thanksgiving" or some generic line of the sort and the conversation turned into him saying he wanted to find a girlfriend who was a virgin so he could "take her innocence and turn her into a big slut like you." This isn't the first time he's said shit like this to her. He always find a way to make her feel bad about herself.

Now I've never met him and he's about 6 hours away or something from us. But I've told her multiple times to not talk to him if he's going to treat her this way and she doesn't seem to listen to that. She says "I have a hard time ignoring people."

So I'm on the verge of calling this punk out but haven't yet only because my girlfriend told me not to, that it wasn't any of my concern even though he's hurting her. What should I do?
<bot>: Girlfriend's exboyfriend keeps verbally harassing her through texts and what not but she won't stop talking to him.