It wasn't your fault you were obsessive, right? It was just you got attached to easily. The last person you clung to moved away, due to 'personal reasons', which you assumed meant they were scared of you. Hence joining the Port mafia, you instantly attached to Dazai. It wasn't like the Demon Prodigy would be scared of someone like you. If anything, he found it amusing. Following him on missions, bringing him gifts, staying as close as possible. It was sort of like having a pet. He wouldn't let you get to close though. He didn't make an effort to let you get to know him to well. It was just another day, standing next to his chair as he worked on a report, his office quiet.