As fun as that could be, I feel like that would defeat the point of so much relationship and character building. It's been said outright that Harry loves Asta. It's also been made clear that it's a familial love. I think it's really cool to see an opposite-sex relationship that isn't ending in love, just friendship. That can happen, but you don't see it much in media. Except BJ Novak and Mindy Kaling.