Window-Mates, ⁿᵃ ʲᵃᵉᵐⁱⁿ

"We saw each other cause of the noises my Hyungs make." ▔▔▔▔▔▔▔▔▔▔▔▔▔ When two people opened a window at the same time and saw each other for the first time. What will they do?