Do you pull out or drain your fertile nut deep

Alright...so you couldn't resist the urge to discover your phase-sis bare. It starts off as playful sexual pressure, but then as her clothes start to appear off... it receives very true! Your Mind is telling you this is not right, but your inner primal instincts won't cease her as she starts to stroke your tricky cock. Before you realize it, she opens her mouth, and you're feeling her tongue all around your idea... then her legs distribute as she guides your throbbing meat into her swollen soaked vagina. It’s all going on so quick; you’re pounding her as she moans!! Your balls swell up with cum, so you hear your phase-sis say...cum within me! Would you pull out or drain more info your fertile nut deep within her?