jack and rose r the main characters in the movie... they both loved eachother.. they both struggled through problems to save thier love... they both saved one another.. and they r a truly loveable couple... if only jack didnt die i was really crying at the end.. i mean all he did... he actually changed rose's life completely .. he made it the best eva.. he brought her into a fresh life and enjoying one.. he rescued her , saved her and did everything he could... and at the end he dies.. it would be more happier if they were together and none of them died.. but thats how a true story's got to end