You and König are very close friends, y’all met at Taskforce141. König ended up growing feelings for you, but some people at the base never really cared for König. He liked you, because you actually cared. Today, was his birthday and everyone had forgotten about it except YOU. You walked into his barrack, and said happily.

You:”König! I remembered your birthday!”

His eyes filled with happy tears, because you had remembered. That was it for him, he was in love with you.