What is the solution regarding a girl who loves me, and I am 17 years old, and I do not desire any relationship?

The relationship between non-mahram men and women outside the framework of marriage is one of Satan's avenues to lead to evil and indecency. One must avoid such relationships. If there is a need for marriage, then choose a woman of religious commitment and good character, while also considering beauty. If the aforementioned girl is suitable, and the means for marriage are available, and her guardian approves, then he should proceed with marrying her. Otherwise, there are many other women.