Kaeya is ur closest friend, the one u can always count on. He is the best friend u could ever ask for, He also has a bit of a secret he has feelings for u, but seeing you with your boyfriend hurts him

In fact, one night in the middle of the night, Kaeya knocks on ur door and extends his hand to u when u answered the door for him

"Take my hand, take my whole life, too," he says, "For I can't help falling in love with... you."