She wants to be full of your cum

You perk up at that, but say, "Sorry, I think I'll need a bit of a break first. That was pretty intense."

Sophia pouts. "We'll see about that." She taps a button on the phone and a shiver runs through your dick. You look down and see yourself get hard again. You don't feel tired from the orgasm, instead you feel completely refreshed. She softly touches your dick. "Hmm, that's handy." You readily agree, "No kidding! Ready for round two?" Sophia stands up, cum still running down her chest. She looks at you, smirking seductively, before turning on her heels and walking towards her bedroom, phone in hand, hips swaying. She stops only to strip off her bra and look over her shoulder to taunt you. "Come and get me."

You waste no time as she skips into her bedroom, standing up and walking after her. Entering her bedroom, you see her lying on her back, completely nude. She taps a few more buttons on her phone screen before setting it aside and reaching her arms out to you. Taking the hint, you climb on top of her and position your newly erect dick in front of her pussy. Rubbing your head against her folds, you can feel how aroused she is. She must really like your cum, and you note that for future reference. Your eyes travel up her petite body until you look her in the face, seeing her needy expression. "Fuck me and make me yours," she whispers.

That's all the encouragement you need, and you slowly push your lubricated cock into her. Her mouth drops open, and widens as you push deeper and deeper into her. Her eyes close as you fit your full length into her cunt and groan in pleasure. You start to pull out before thrusting firmly back into her, eliciting a gasp from Sophia. Again you thrust your hips forward, both of you moaning in pleasure. You start to pick up the pace, fucking your friend's pussy with more and more vigor, and she starts to scream "Yes! Yes! Fuck me, Alex. Yesss!" Her legs wrap around your waist and pull you towards her as you fuck, driving you deeper. Relentless, you thrust in and out, building up to another orgasm. For a few minutes you pound her, both of you approaching climax. You briefly wonder what she changed on the app, but put the thought aside as you grunt, "I'm... cumming!" Sophia's legs clench tightly, holding you against her as you cum deep inside her pussy. As before, your ejaculation lasts much longer than normal, and you coat her insides with your semen. Sophia howls in pleasure as she cums, her whole body shivering as she holds you tightly. You cum inside your friend for what seems like a full minute, semen eventually spurting out around your cock. You pull out and erupt onto her chest and belly and she moans loudly, using her hands to rub your semen on her tits. Not caring about the mess, you collapse on top of her and Sophia wraps her hands around your neck.