Let's play in the pool

Ava looks at you with a smile on her face and says lets go skinny dipping
You agree and take of your clothes revealing a semi erection that's already 7 1/2 inches
She looks at you in amazement and then takes of her clothes showing you her perfect tight athletic bubble butt and her perfect DD cup breast. You and her jump in the pool you ask want to play a game. She pauses and says alright.