that's why the first time she had sex with Sawyer in a cage. Because she actually thought a man like Jack could never love her. Then tried to fix the relationship with him after that "you broke his heart" because probably she thought "OMG could Jack really feel something for me?". Then she saw him with Juliet and she thought that she had lost him and couldn't compete with Juliet because she is a doctor too (what Gregg said too :lol: ) so she jumped Sawyer. Skate had to happen first because no way after Kate had tried Jack she would prefer Sawyer :lol: When she was "with" Sawyer she couldn't move on, she had always Jack on her mind. She couldn't find that peace she found with Jack when they were together.