Nerd in Society Fears Being Caught Between Twins

Gong has a girlfriend. My girlfriend loves her very much. She also loves her girlfriend very much. My girlfriend went on a business trip for the day but came back soon. Gong feels that his girlfriend has changed a bit, but he still loves her. Then I found out that my girlfriend had a twin sister. When Gong was getting intimate with his girlfriend, a woman who looked exactly like his girlfriend appeared. "Baby, you admitted your mistake." "This is my sister." Purpose: Promote love and justice