Before you could explore more of the park, you both saw the clouds get darker, and darker, until they merged together while at the same time started spilling drops of rain that would get your clothing wet. You, and your girlfriend find shelter on top of the picnic tables, in order to stay dry, while waiting for the rain to stop.
Luckily, it only rained for like 10 minutes, which caused the clouds in the sky to separate once they were white again, and multiple drops of rain stopped falling to the ground. All of a sudden, you both also spotted a rainbow appear in the sky. "Look babe, a rainbow," your girlfriend says, while pointing to it. "According to Irish tales, at the end of every rainbow lies a magical pot of gold that grant wishes. Maybe if we find it, we could make any wish we want come true once we arrive at the end."