Most Helpful Girl
The short answer is "no".
The longer answer is "no, not right now". She is with someone else and she has made it clear that you can't get back together and that she cannot be friends with you. You have made it clear how you think about her. She is aware of it. The worst you could do now is keep sending messages, calling her, and forcing your friendship on her. You should back off for a while. Let her explore her possibilities with this new guy since that is what she wants right now. He might not be the right one for her, but you shouldn't intervene. Maybe one day you can get back together with her, but don't pressure her. If you want a chance with her later on, then the only thing you should do right now is leave her alone and let her live her life.