My stepson made me suck his dick, then I begged him to pump his warm seed deep inside me

We were just having a quiet night watching Netflix on the couch, but I couldn't ignore the growing bulge in his pants. One thing led to another, and suddenly he was shoving my head down onto his hard, young cock. I was lost in the moment, taking him deep until he threw me onto my back, spread my legs, and plunged into my aching pussy. It felt too good to ever stop. I wrapped my legs around him, pulling him deeper, and wouldn't let him pull out. I begged him over and over, Don't you dare pull out, until I felt him tense up and pump his warm seed deep inside me, filling me up completely.