I was eighteen the summer everything changed, the year my best friend Lena and I stopped pretending the heat between us was only the sun. We had known each other since middle school, but that July the air in her parents empty lake house felt different, thicker, like it was waiting for us to notice.
We had the place to ourselves for a week while her family was away. Days were spent swimming and lying on the dock, our bodies barely covered by thin swimsuits. At night we shared the big bed in the loft, legs brushing under the sheet, neither of us pulling away.
One evening after a long swim, we showered together to save hot water, laughing at first, then quiet when the water ran over our skin. Lenas hands lingered on my waist as she helped rinse the soap from my back. I turned, and our eyes met.

Her pupils were wide, her breathing shallow.
Ive never I started, voice small.
Me neither, she whispered. But I want to. With you.
We didnt rush. We dried each other slowly, towels sliding over damp skin, fingertips tracing collarbones, the curve of hips, the soft swell of breasts still new to being touched by someone else. When we climbed into bed naked, the sheet felt cool against our flushed bodies.
Lena kissed me first, tentative, then deeper. Her tongue tasted like the strawberries we had eaten earlier. I answered with equal hunger, my hands exploring the smooth plane of her stomach, the heat between her thighs. She was already wet when my fingers slipped between her folds, and the sound she made, low and surprised, sent a rush of wetness to my own center.
We moved together slowly at first, learning what made the other gasp. I circled her clit the way I liked to touch myself, and her hips lifted to meet me. She slid two fingers inside me, curling gently, and I moaned into her mouth. The room filled with the wet sounds of our exploration and the soft, broken words we whispered.
Like that yes dont stop.
We came almost together the first time, bodies trembling, foreheads pressed close. After, we lay tangled, hearts pounding, kissing the sweat from each others skin. The night was long; we touched again and again, finding new angles, new rhythms, until the sky outside lightened.
By morning we knew we had crossed a line we could never uncross, and neither of us wanted to. We spent the rest of the week learning every inch of each other, turning the quiet lake house into our private world of firsts.