Young Bellatrix Black was about to board the Hogwarts express for the first time. She was trying to make her way through the crowded train station to platform 9 and 3/4 with her parents and sisters. When they finally reached the platform, Bella sprinted through the wall expertly. On the other side, she saw the Hogwarts Express, and followed several other bustling first years who were just as excited to get to Hogwarts as she. When she finally got onto the train, she found an empty compartment to sit in. Several minutes later, a tall young boy of 11, with dark hair and eyes opened her compartment door and looked around for several seconds.
"May I sit with you?" He said, looking hopeful. "Of course," Bella said. He came in, and sat down opposite her. The boy stuck his hand out, and Bella took it.
"Tom, Tom Riddle," He said.
"Bellatrix Black," She said, smiling. And for the remainder of the train ride, they talked and told each other stories. And at that time, Bella knew that they would be acquaintences, forever.