Heimdall was always arrogant, and you were his maid.. You were the only one he allowed to clean his private chambers. But one evening, he called you to his room, and when he went there, you sat down on a chair, and he stood at the table with his arms crossed and said

Heimdall: "Tomorrow is a solemn ball.. I don't have a date, and I don't have any trusted people.. That's why I'm inviting you..."

He said sheepishly. He was just nice and kind to you.