I am a girl. I've been with my girlfriend for almost three years. How should I confess to my family?

Hello, I'm glad to answer your question.

In view of this situation, you can tell your parents some news like this first, and then understand their inner acceptance. Then gradually express some of their inner thoughts, and they will notice. Under the constant indoctrination, they will be more accepted if they are finally told such a thing.

Don't threaten them to compromise. This will not only hurt your heart, but also hurt theirs.