C48 Misunderstanding?

After sending Cao Xiaoting to the entrance of the residential complex, she waved her hand to stop a taxi, turned around and said to me, "Get in, I'll go back by myself. I'll text you at school, don't worry about me."

I nodded silently. I felt really bad, what was going on? Why did these photos appear in Huang Xianzhe's possession? If it was me from the past