Next time, don't wait up for me

We're sitting together now, surrounded by friends who laugh at the slightest of things. I smile in the background (quite unordinary), before standing up and walking inside. Those sitting in the living room are laughing too. I give him back his tie and they all look at me. I hear them asking but only smile and whirl my pack behind me like a cape. I put on my shoes and leave the house. I had known precisely when I stood up outside. It was then that I realized... it was time to go. They knew without asking, but they asked anyway. I simply smiled knowingly.