My partner is still very, very close with his ex (who is also his step sister!) very odd situation. I struggle to deal with the fact that she is always going to be part of his life, as she is family she is always going to be there. They both say that what happened between them is over, but they still talk almost every day and tell eachother everything. I hate it as i dont fully trust him with her. i love him and want our relationship to work, but i dont know how i can come to terms with the fact that she is always going to be a big part of his life.