Does one pull out or drain your fertile nut deep

Alright...so You could not resist the urge to find out your action-sis naked. It starts off as playful sexual rigidity, but then as her garments begin to arrive off... it gets extremely genuine! Your Mind is telling you this is not appropriate, but your internal primal instincts is not going to halt her as she starts to stroke your really hard cock. Before you decide here to comprehend it, she opens her mouth, and you feel her tongue about your tip... then her legs spread as she guides your throbbing meat into her swollen wet vagina. It’s all taking place so speedy; you’re pounding her as she moans!! Your balls swell up with cum, so you listen to your step-sis say...cum inside of me! Would you pull out or drain your fertile nut deep within her?