Haruhi/Kaoru
The Calm Twin: Part X
Kaoru often found himself picking up his twin's messes. He wouldn't lie and say it didn't annoy him. It did. But that was merely the way his brother was. Acting without thinking. So apologizing in Hikaru's stead was hardly unusual for him. What was unusual was for someone to pick up on the fact he wasn't actually his brother. In all reality he should have known Haruhi would pick up on the act.
Haruhi was quietly being drawn in by Kaoru. He was charming, not that she cared, caring, and sweet. He was also thoughtful and took good care of his brother. In all honest she wouldn't mind going out with him. He was calm but playful and she could see Kaoru bringing joy and laughter into life even without the Host Club.
Kaoru was also being drawn in by the girl. She was cute normally, beautiful in feminine clothes, caring, sweet, and Haruhi was just too nice. She was insightful, able to tell the two apart, so he wasn't surprised that she knew Hikaru wasn't him right away on the 'date'. She would be an excellent wife. Her cooking was excellent and he imagined she would bring stability into his life, away from the insanity and stability the Host Club gave him.
One important thought lingered with both of them. If they were to date, what of Hikaru? Kaoru worried they'd drive him away because of Hikaru's jealousy. Haruhi wouldn't put up with it, just like how she hadn't put up with it regarding Arai-kun. Haruhi was concerned Hikaru would feel like a third wheel. They both decided if they ever dated, they would be sure to include Hikaru. Dating just one twin at this time wouldn't be right.