Betty's brother

At a bridal shower, every guest was asked to introduce herself and explain how she met Betty, the bride-to-be. "I met Betty while dating her brother Mark," Kathleen said. Vivian
gave the same answer. Melinda said she was Betty’s brother current girlfriend. An older woman that was sitting next promptly said. "It’s nice to meet all of you," she announced with a grin. "But I think I'd really rather meet Mark."