Would you pull out or drain your fertile nut deep

Okay...so You could not resist the urge to check out your stage-sis naked. It begins off as playful sexual pressure, but then as her dresses begin to come off... it will get really serious! Your brain is telling you this isn't appropriate, but your interior primal instincts would not stop her as she starts to stroke your tough cock. Before more info you comprehend it, she opens her mouth, and you are feeling her tongue close to your suggestion... then her legs unfold as she guides your throbbing meat into her swollen soaked vagina. It’s all going on so fast; you’re pounding her as she moans!! Your balls swell up with cum, so you hear your step-sis say...cum inside of me! Would you pull out or drain your fertile nut deep inside of her?