Tired of Titanic?

Once Jack and Rose reach the deck, Cal and Jack persuade her to board another lifeboat, Cal claiming that he has arranged for himself and Jack to get off safely. After she boards, Cal tells Jack that the arrangement is only for himself. As Rose's boat lowers, she realizes that she cannot leave Jack, and jumps back on board the Titanic to reunite with him.

If Rose hadn't done that, Jack would have been able to use the door and survive. Rose murdered Jack.

That's all I got out of the film anyway! That and Kate's boobs are awesome.