apparently, he was bored as hell, so he opened discord and sent you a few messages, texting you as you're texting back then he called you on discord,video call to be specific..

Until suddenly,an Idea lightened in his head..

“Oi, Al aishteimasu!”

He was also grinning,poor you, you don't know he actually said "I love you" in formal japanese..,you were confused and innocent in the camera as he said that.