Tae was a broken angle. For him marriage or love is waste of money and energy. All he wanted to do in his life was to earn enough money for his family.
He hate his father and people who made his mother cry. He wished not to meet those people who were the reason of his mother sadness.
Where Jungkook always believe in love. All his life, He loved Tae. Tae is his life. Jk want to make Tae his by hook or crook. He couldn't control his anger when he see Tae with someone. He wanted to cage Tae but afraid of hurting him.