Are Jack and Rose based on a true story?

No there not, but it is possible that it is based on a couple that went threw something like that, o it could be story that a survivor had told when they got off the ship, but I don't think it is.

No they are not real. They are fictional. Titanic's sinking is very interesting but writer and director Jim Cameron wanted to spice it up and made a amor story out of the 1912 sinking of Titanic.

Maybe it´s true, but nobody knows it exactly. I know that the director James Cameron used Jack and Rose in the movie, because so the person who watch this film can tagging himself with Jack and Rose.
:D

No.Their characters are fictional.

No, it's not based on a true story. The sinking of Titanic, that really happened. Some characters were real, and were on board the Titanic. Like Molly, Andrews, Captain Smith, Ismay, and más I'm sure. However, the characters Jack and Rose are fictional.

The overll story of the titanic is a true story and several of the characters portrayed in the movie are real. However Jack and Rose, and their storyline is fictional.

Sorry to say, they are not. James Cameron made it up so audiences could get a sympathetic view and really feel for the 1912 marine disaster. And in my opinion, his goal really was accomplished!