How can I make Scorpio's possessive girlfriend respect my opinion?

I don't think the two things you said conflict. Even a possessive Scorpio girlfriend will respect your opinion, depending on how you usually get along. In my personal experience, if you often don't make constructive suggestions, people will subconsciously ignore your opinions, so it's still about yourself, not your girlfriend.

But Scorpio girls are very possessive, which I agree with. My ex-girlfriend wants a Scorpio girl. Although I love her very much, I really can't get along with her. Even if you can't say a word to a classmate of the opposite sex, you will say that I don't love her and then have a big fight with me. I think such people's ideas are morbid and disrespectful. Moreover, everyone should have their own circle, and I think it is ok.

If you want your possessive Scorpio girlfriend to respect your opinion, I think you'd better have a good talk with your girlfriend. After all, such a thing cannot be solved by time. Only when two people talk openly can you solve the problem more quickly and directly, but you must pay attention to your way of speaking. For Scorpio girls, if your tone is a little heavy, the other party may think that you are picking a quarrel, so if you want to solve the problem.

Finally, I hope all Scorpio women can respect their other half, let the other side feel your respect for him, and make your feelings sweeter and go further.