First of all, as your friend, you can persuade her, but don't let her troubles affect your life; After all, you are still young, just mind your own life and study. There is no need to feel guilty. After all, many things are beyond your control. If you satisfy her blindly, what about yourself? What about your family? People, living in this world, you must be worthy of yourself before you can truly be worthy of others. Don't try to be a hero. Although this is every boy's dream, you can't save the whole world.

Secondly, she likes you. If she really likes you and you don't like her, it's none of your business. If you don't know how you feel about her, there's nothing you can do. However, it is recommended not to have online dating, especially if she is entangled before she starts. Who knows what she is worried about.

Finally, even if his brother wants to call you, her brother won't let him learn badly, if he is a good brother. If not, then this girl is not trustworthy. After all, "you can get to know her through her friends."

After all this trouble, the final solution is to change her mobile phone number, blacklist her QQ and cut off all contact.