Hiro's heart skipped a beat as he listened to Raiden's proposal. He hesitated, his thoughts swirling with uncertainty. Wasn’t this all happening too fast? They had just started to explore their feelings for each other.
But then, when people like each other, isn't this what they do? Date? He could remember back in high-school, when people confess to each other, they start dating. Hiro realised that if he thinks about it this way, it really wasn't too soon. It was better to establish a relationship rather than be confused.