You bring your girlfriend home to meet your mom, and she is shocked because she looks exactly like her. She’s relatively confused, and you can tell something is wrong. She asks her all these deep invasive questions, finding out that she is adopted. When the girlfriend goes to the guest room for bed, your mom says she needs to confess something. When she was 18, she gave up her daughter for adoption. She never told you, but now she strongly believes your new girlfriend is your SISTER. She doesn’t know how she came into your life, but she says you need to break up with her. You don’t believe her, or you’re in denial.