Upon finding out that Tate had raped her mother, and was therefore indirectly responsible for her death, Violet ends their relationship, leaving Tate devastated, but Tate tells Hayden that he is willing to "wait forever" for Violet to take him back.
Tate had raped her mother. Tate was therefore indirectly responsible for her death. Violet was finding out this. Violet ends their relationship. Violet was leaving Tate devastated. He is willing to "wait forever" for Violet to take him back. This is what Tate tells Hayden.