Everyone is saying Haral is allowing himself to be used and it's not fair, well technically yeah, but he knows Leo can't just switch off his emotions, so he's being there for him and allowing him to gradually let his feelings for Arte go. He knows the more intimacy they share, the more Leo will trust him, and the more likely it will be that Leo will start to look at him instead of Arte. Rather than just allowing himself to be used, I think Haral sees it as patiently waiting for Leo and allowing his feelings to change naturally. Haral really is the best match for Leo emotionally.