There are obviously two in my QQ space, but three are displayed. I deleted them before, and then my girlfriend can see them. What should I do?

The one you deleted was deleted by QQ, right There is no option to remove the check mark from the computer webpage at the same time. So she saw it on the computer. I don't know if yours is really important, it's not important. When she asks you, you answer truthfully. Don't lie to cover up, it is often worse. I believe your girlfriend will understand you. Only when you face it sincerely will there be true love. I wish you happiness!