Why did Ruth fall in love with Jack?
Because the free, free, chivalrous, arrogant, and tacky "ground gas" in Jack is exactly what Ruth yearns for, but lacks.
What a person lacks, it is easier to fall in love with the other person.

For example, if you are not so good-looking, you are easily attracted to people with good looks; if you do not have a good education, you are easily attracted to people with high academic qualifications;
People who are not confident in their own body are easy to fall in love with people who are tall and elegant; people with poor birth conditions are easy to fall in love with people with good family quality.
Because of some of the characteristics of the other party, they make up for their own deficiencies. Subconsciously, you are looking for the other half that can fulfill you.
This explains why, in Titanic, Ruth, a noble and well-educated white, would fall in love with the penniless and bohemian Jack.
At the time, Ruth was very unhappy with her environment.
Although he was born into an aristocratic family, because of the death of his father, the family's economic and social status was greatly affected, and only the fame of his father's life supported the façade.
Ruth is arranged by her mother to marry the aristocratic young Carl – just as the drowning man catches a life-saving straw and does not allow her to refuse and resist.
But Ruth didn't love Carl, though Carl tried her best to please her.
Ruth felt that she had been kidnapped by her affection and was at the mercy of her mother like a tool man.
The cookie-cutter dances and parties annoyed her, her imprisoned heart longed to break free, and the feeling of being ignored by those around her suffocated her. So she deliberately smoked at the banquet—trying to get the attention of those around her. But Karl immediately pulled out her cigarette.
Ruth is a woman who loves freedom, has rebellious genes in her bones, and is not satisfied with superficial vanity.
She would be captivated by the uninhibited drift in Jack, and she longed for that changing, fluid, fresh, free environment.
When Jack and Ruth talk about working on a fishing boat in Monterey, earning 10 cents a piece by painting portraits on Santa Monica Pier in Los Angeles, Ruth has an envious expression: Why can't I be like you? Just go away and wander around?
And when Jack tells her that we can drink cheap beers there, play roller coasters, and ride horses like men on the beach, Ruth has a look of longing and eagerness.
Jack is an interesting person— and this kind of fun comes from his ability to feel happiness and insight into people's hearts that he can hone from the rich practice of the bottom of society.
For example, Ruth impulsively escapes to the sea and wants to jump into the sea, and while she is hesitating, Jack finds her. He approached her cautiously, trying to catch her, making a gesture to jump with her, but telling her that the water would be cold.
Ruth's heart began to shake when she heard that the sea was cold, but she still tried to keep her pride and tell Jack not to come near her.
Jack saw through her fear and trepidation and stared into her eyes: "You won't jump, you'll have jumped a long time ago." “
When Ruth went to the third class with him and the civilians, they danced enthusiastically in the crowd, taking off their shoes and dancing with him in public.
While drinking lavishly, laughing in defiance of the image, and taking a cigarette from someone else's mouth to smoke, Jack finds himself in love with Ruth.
He was in love with her.
She saw the uneasiness, entanglement, and pain deep within her, and he knew that she did not love her fiancé Carl, so he seized the opportunity to persuade her to leave Carl:
You are kidnapped by feelings, you do not belong to such a life. If you continue like this, you will die.
Even when Ruth told him, "Then it's not your turn to save me," Jack looked her firmly into her eyes and replied, "Yes, so you have to be strong." Unless you're doing well, I won't let go. ”
In the face of the noble Bai Fumei, he knew that his ability was limited, but he could not bear to watch her suffer in a twisted love. His love was calm and pure.
The outwardly unruly Jack is actually very pure at heart—when he introduces Ruth to the nude female models in his paintings, Jack's smile is bright and pure, and his expression is compassionate and kind.
Even when he painted nudes for his beloved Ruth— his eyes revealed a respect for art, without half anything obscene.
Jack, who was born into poverty, did not show the slightest inferiority in front of the upper class, and behaved generously.
At the banquet, Ruth's mother deliberately made him ugly. Ask him:
How does it feel to stay in third class?
Jack smiled slightly and replied humorously:
Pretty good, almost no mice.
The noble lady asked again:
Do you like this kind of wandering, homeless life?
Jack narrowed his smile and replied seriously:
Yes, ma'am. I now have everything I want. I have a healthy body, I have paper for painting, and I like to wake up in the morning and face the unknown.
I don't know who I'll meet, and I don't know where I'm going. I feel like life is a gift and I don't want to waste it, you don't know what the next hand will be, learn to accept life.
There is neither bluffing argumentation nor inferior inferiority. ------------------
It's no surprise that Ruth fell in love with him—because he had a strong heart and a determination to face his predicament so calmly that his poverty was enough to make people ignore his poverty.
Why does the eccentric Huang Rong like the thick Guo Jing in "The Legend of the Eagle Shooter"? And in "Yitian Slaughtering Dragon", the simple and kind Zhang Wuji will fall in love with the clever and cunning Zhao Min?
Because upright gentlemen have too high moral standards for themselves, they are introverted and deep, and they need to always maintain humility and demeanor, which is actually quite tiring.
They will have depressed times, eager to have the freedom of the girls, such a "scoundrel", such a free swing.
A lively, intelligent, good-looking girl with a large number of suitors. But she did not love the young boys on campus, and in her sophomore year, she fell in love with a man with a successful career and a cheerful atmosphere.
After the two men had been in a brief relationship for a while, the man told her very directly that he did not love her.
Girls are not reconciled. In her heart, she still maintained the pride of the little princess. Even though the man didn't love her, she kept in touch with him. She thinks of herself as his spare tire, and there is a hint of luck in her heart, maybe one day, he will fall in love with her!
Sadly, the girl waited for 10 years and still didn't wait for the day he loved her.
Until the day the man got married, the girl cried and cried very sadly.
I was not reconciled, I was younger than her, prettier than her, richer than her, she was so ordinary, still a second marriage. Is he blind? Why did you choose her and not me?
The girl was right. The lady's conditions were indeed ordinary, her appearance was average, and her academic qualifications and work were average. She was a few years older than her, and as the girl said, she was not as good as she was.
She can only cook.
The girl broke down:
What's so great about being able to cook? I can play the piano and I can draw!
However, what the girl can't see, people who come over will understand at a glance:
The lady was gentle. Looking at the man's eyes are full of tenderness, and the warmth and thoughtfulness of both wife and mother are full of hands and feet. —It turns out that what men want in their hearts is such a delicate and gentle woman.
A partner who understands him, understands him, supports and comforts each other. This is what he is missing and has been looking for.
This is something that the girl who has a crush on him can never do.