You meet her on the next day

On the next day, you go to Caitlin's place and ring the doorbell. It takes a while for her to answer the door, but finally Caitlin comes to the door wearing nothing except a bathing towel. "Oh, you're early. I figured I'd have time to shower before you come. Anyway, come in..." You enter Caitlin's apartment. "Make yourself comfortable while I get cleaned", she says. Then she grins and adds: "Or... you could join me in the shower. It's not like we need to be modest at this point."

You take up the offer and follow Caitlin to her tiny bathroom. You're not sure if it's even big enough to be called a bathroom. There's just enough room to accommodate a shower area separated by a curtain, a toilet seat and a sink. Caitlin hangs her towel on a hook, showing her incredible curves to you once again. You put down the toilet lid and sit on the seat. You watch as Caitlin starts running the water from the shower and steps under it once she's satisfied with the temperature.

"Hope you had fun last night", Caitlin chit chats nonchalantly, as if talking about a normal movie night. "I'm so glad you are doing this with me", she says as she takes some shower gel and starts soaping up her body. You just nod and swallow, feeling a lump in your throat as you feast your eyes on her glistening skin.

"Do you like what you see?" she asks, almost coyly. "I don't bite unless it's asked for!" You manage to stammer out something that sounds like, "sure". Caitlin squirts some shower gel in her palm and starts lathering up her enormous boobs. "Do you like this better than what you're used to?" She asks, as she works the soap up and down every nook and cranny. You can't help but to get lost in her boobs as she soaps up every square inch of them. You've never seen anything so beautiful in your entire life.

"You don't have to say anything", she continues. "That bulge in your pants tells me you really like looking at my tits. There's nothing wrong with that."

"I..." You can't find anything else to say.

Caitlin says "Come on, strip down! I want to see how hard you've gotten!"

You quickly fumble through your pants and pull them down, along with your underwear. Then you step out of your socks. "Now come over here and let me wash you."

You do as she says. You walk over to the shower. Caitlin's shower area is way too small for two people, but you squeeze in with her, careful not to touch the cold tiled wall. She soaps you up, paying special attention to your cock. "Dana's right, you are perfect donor material", she says. "Not only are you handsome, you're hung like a horse". She starts to rinse the soap off your cock, using exaggerated strokes as she speaks.

"Now that your package is clean, I want to try something", Caitlin says.

She kneels down in front of you and looks up at you. "Dana tells me she blows you a lot. I've always wondered what a cock feels in my mouth." With that, she sinks your cock in her mouth.

It feels so good. You can't believe you just heard Caitlin imply this was her first time sucking a cock. She is a quick learner though, and she sucks your cock just as well as her sister. If anything, she's better. She deepthroats you for a good thirty seconds before sliding your cock out of her mouth. "Actually, that feels amazing! I want to try something else, too!"

Caitlin slides her body up against you, until her boobs are level with your cock. "Dana also tells me you like to tittyfuck", she tells you as she wraps her massive boobs around your cock. She tries to move, but the position is a bit awkward for her. "Hmm, she didn't tell me how this works, though. I guess one of us has to be lying down", she says, then adds: "Come on! Let's dry up and continue in the bedroom!"

You decide to follow her to the bedroom, thinking 1. What else has Dana been telling her sister, and 2. How the hell has Caitlin managed to turn 40 without seeing a tittyfuck scene in a porn flick?

You lie at the edge of Caitlin's bed, your feet on the floor and hold your cock, pointing it at the ceiling. Caitlin picks up the hint on how to position herself and kneels down on the floor next to the bed, again wrapping her boobs around your cock.

She starts slow and gentle at first, squeezing your cock between her boobs and slowly moving them up and down. Within a minute though, she's tittyfucking you like a porn star.

"Mmmm, Dana was right about one thing", she moans between thrusts. "You do like it this way!" she continues as she starts going faster and faster.

"Just don't like it too much, now! You'll have to save your load to fertilize me again."

She milks your cock until you feel like you can't hold back anymore.