Most Helpful Girl
Move on, she's taken. And she's clearly not trustworthy. If she can dump him for you, she can just as easily dump you for someone else. And if not dump you entirely, she's clearly emotionally cheating. You don't get feelings for someone else when you're in a relationship. That means she has commitment issues, if she's always looking for other guys. No point in trying to pursue a girl like that.
Most Helpful Guy
Your her #1 backup guy in case things don't work out with her boyfriend, or maybe she was giving you an opening at that point to fuck her and you let her down because you didn't pick it up and are now posting in gag.