Together, they bit my cock wildly

Sometimes I pose nude for life drawing in art schools. Normally it’s just a job without any contact or emotions. But last week a beautiful young girl sat in the room and drew me. I couldn’t stop my eyes from looking over at her. She was so beautiful; lean and graceful, with soft brown eyes and blond hair. She was very well endowed! When I noticed her nipples getting hard under her blouse, my penis began to grow. I had to close my eyes and order them not to look again to prevent an erection.
After the study period, the girl, named was Rachel, asked me if I would pose for her in private.
The very next day I went to her place. Rachel was not alone. She asked me whether I would pose together with her girlfriend, Chenoa. I answered: “Why not?”
Chenoa gave me an adorable smile and stripped - shy but promptly. She looked like an angel, with skin like bronze, mysterious dark eyes and long black hair. My heart was in my mouth when I saw her naked. She was smaller than Rachel, lean, dainty but athletic with little tight breasts. I had an erection before I was naked and asked Rachel blushing, what Chenoa and I should do.
Rachel wanted to picture a blowjob with Chenoa biting me!

“Biting?”
Chenoa knelt down, took my cock and bit very gently. It was very tingly!
Rachel asked us to hold the position and started drawing. Chenoas teeth closed slowly.

“Don’t move”, cautioned Rachel, but I couldn’t stop trembling, because Chenoa's bites excited me more and more. Rachel stopped drawing and watched us closely. Chenoa bit down, very impassioned. Rachel slipped out of her clothing and told Chenoa that she wanted to participate. Two gorgeous girls, naked and horny. Together they nibbled and bit my cock - wild and fervent, and very emotional - until I lost myself to their mouths.

Never before have I known such a thrill of ecstasy. And when I finally had an orgasm, it felt a little like dying. It was the best sex I ever had.
Tomorrow Chenoa and I will pose nude for Rachel again. I’m really looking forward to that!