After the referendum on leaving the EU in 2016, a friend told me that the vote felt like a jolt in her sleep. She had the sensation of falling and being awake. Brexit made her think about the country she was living in and what she wanted in her own future.  For me, I knew something was about to change when I woke up early the day after the referendum and read a message from my usually apolitical housemate. “There’s going to be a united Ireland,” she said.  There’s no doubt that Brexit has provided pro-unity advocates with a significant…