Do you pull out or drain your fertile nut deep

Ok...so You could not resist the urge to discover your stage-sis naked. It begins off as playful sexual tension, but then as her clothing begin to come off... it gets incredibly real! Your brain is telling you this is not ideal, but your interior primal instincts would not prevent her as she begins to stroke your hard cock. Before you realize it, she opens her mouth, and you're feeling her tongue around your tip... then her legs distribute as she guides your throbbing meat into her swollen moist vagina. It’s all going on so website rapidly; you’re pounding her as she moans!! Your balls swell up with cum, therefore you hear your stage-sis say...cum inside me! Does one pull out or drain your fertile nut deep inside her?