After dating for half a year, my girlfriend suddenly broke up with me. She said she was no longer sure if she liked me. She has stubborn determination and she didn’t even listen to me when I asked her to give me a chance. In the midst of my heartbreak after breaking up with her, her sister or rather my ex-girlfriend’s sister, appeared. When I told my ex-girlfriend’s sister what had happened, she made a proposal to me. Would you like to go out with me this time? I intended to make my ex-girlfriend jealous, but we ended up having so much fun together that it didn’t matter anymore……