It seems that first love is unforgettable. If the landlord is not single, I suggest we forget it. If you are still single, it is good to find that feeling. If conditions permit and time is limited, you can hire a private detective. They are experienced and have professional equipment. It's too easy to find someone. My friend asked the detective to find someone before. It is an old detective agency registered by Shanghai Industrial and Commercial Bureau. It is very efficient and professional.