reason:
They hated each other until they went on the world's shittiest road trip ever and became insanely devoted to each other to the point where Jaime lost a hand for her and literally jumped in a bear pit to protect her
Lies Layered Like Peach Strudel - Chapter 2 Updated!
Jaime Lannister was one rich, obnoxious individual. Obnoxious enough to buy an apartment (one-floor penthouse?) opposite Stark, Stark, Tully & Co. (SSTC)’s office to be called his home.
It was that afternoon when Jaime proposed to her. Brienne could barely utter a word and only blinked rapidly at him. So he suggested that after office hours, she would go to his house and ‘discuss’, while finally un-pin her from the wall since he decided he should go home and rest.
still love the way grrm decided to write this so damn much. other than the obvious romantic undertones of it all the “so he did” is so terse and simple and blunt as if it is the most straightforward and obvious thing in the world for him. jumping unarmed into a pit with a live bear to try save this woman is the most sound thing in the world. wanting her is the most sound thing in the world. doing the right thing is the most sound thing in the world. there is no justification for even a blink of hesitation. so he did.
… The faint light revealed Brienne of Tarth. “I swore to keep you safe,” the wench said stubbornly. “I swore an oath.” Naked, she raised her hands to Jaime. “A sword,” Brienne begged. In this light she could almost be a beauty, he thought. In this light she could almost be a knight. Brienne’s sword took flame as well, burning silvery blue. The darkness retreated a little more.
“Jaime watched her eyes. Pretty eyes, he thought, and calm. He knew how to read a man’s eyes. He knew what fear looked like. She is determined, not desperate.”
- Jaime Lannister in Jaime I, ASOIAF A Storm of Swords by George R. R. Martin