If you are sending Liam’s girlfriend rude and disrespectful messages, you should be ashamed of yourself! You do NOT own Liam or have any right to give your input on who he can and can not date. If you are his fan, you should be supportive of something that makes him happy.
Grow the fuck up. You will NEVER, EVER, EVER have a chance of dating him yourself so Let. It. Go.