Even though you may get along, your boss prioritizes tasks, quotas, and superiors over your well-being and pay. Redditor u/PmZ_Xt came to this realization the hard way as explained in this story below.
They were told they’d get a promotion once a new person was hired for a role the company had been trying to fill for four months. But when they finally found someone, the new hire was getting paid more than them. When they talked to their boss about it, they learned that companies sometimes prioritize offering big salaries to new hires, even if it means treating current employees unfairly. Luckily, OP had the smarts to leave that job behind before things got worse.