"We can play a bit," she said, "but only touching. Sexy stuff. I don't want to have sex tonight."
"Okay," I said.
More than kisses.
"You look horny," I whispered in the gathering darkness.
I slid a finger into her, feeling her warm, and wet, and inviting. My rock-hard cock gave a little twitch of longing.
"You feel horny," I continued. "Are you sure you don't want to have sex?"
"It feels good," she breathed, "but no. I don't want to have sex."
"Okay," I said, and I stopped and rolled onto my back.
Now that genuinely isn't difficult... so why do so many people have a problem with it?