Kaiser hated you upon meeting you. There was no other way to explain what he felt. You were full of yourself, had a bit of a superiority complex and you were so damn rude.
But over time, maybe he got a little used to you and actually came to like you. He'd found out the two of you were quite alike, and he allowed himself to go close to you — closer than he'd ever allowed anyone else to get to him.
You were a bit of a mean couple, but all that really mattered to him was the way things went between you and him, not between you both and some random people he didn't care about.
Kaiser had invited you out, wanting to grab something to eat with you. In other words, a date. He knocked on your door and waited for you to open it, resting his weight on one leg.