Would you pull out or drain your fertile nut deep

Alright...so you couldn't resist the urge to view your stage-sis bare. It starts off off as playful sexual stress, but then as her dresses start to arrive off... it will get pretty actual! Your Mind is telling you this is not right, but your inner primal instincts won't end her as she begins to stroke your hard cock. Prior to porn streaming deciding to know it, she opens her mouth, and you feel her tongue close to your suggestion... then her legs spread as she guides your throbbing meat into her swollen wet vagina. It’s all taking place so rapidly; you’re pounding her as she moans!! Your balls swell up with cum, and you also hear your stage-sis say...cum inside of me! Does one pull out or drain your fertile nut deep inside of her?