Yes

You: "Thanks, Dad. I would like that. I want Alyssa to myself now..."

Your dad picks up your phone and dials Alyssa. Sid picks up. You can't hear what Sid is saying though...

Sid: "Hey bud, how's it going?"

Dad: "This is Bernard, Matt's father. I presume you are Sid, the...sex therapist..."

Sid: "Well this is a surprise. Yes, that's correct. How can I help you, Bernard?"

Dad: "I demand that you cease any and all sexual lessons with my sons girlfriend."

Sid: "That's not such a good idea, Bernard. My lessons are not only for the benefit of Alyssa, but Matt's benefit as well."

Dad: "I fail to see exactly how that would help him..."

Sid: "You're his dad, so you know him well. Matt is timid, shy, non assertive. He needs to learn to be a man. Right?"

Dad: "Well...yes, I think you're right about that."

Sid: "I mean, for god's sake, he couldn't even take Alyssa's virginity. I had to do it for him..."

Dad: "what?!"

Sid: "Listen, Bernard. It's very important that Matt doesn't know about that. It would undo the progress we have achieved so far. I am a professional, and I know what I'm doing. "

Dad: "It just isn't right..."

Sid: "Matt is close to a personal breakthrough, we could have him marrying Alyssa this year if you don't intervene his therapy."

Dad: "... really?"

Sid: "absolutely! And besides, if you don't mind me asking, are you a married man, Bernard?"

Dad: "Divorced, actually..."

Sid: "ah, then I am sure you wouldn't mind Alyssa practicing some lewd texting on you? I would have her do it to me but I don't really have a phone, you see. You would be the perfect candidate, and it would really help your son."

Dad looks at you with raised eyebrows...

Dad: "Uhm...sure....I guess."

Sid: "Good! It would involve her practicing dirty words, nudes, little sexual stuff like that. Thanks for your help, and remember, don't tell Matt about any of this. It would destroy him..."

Dad: "Of course..."

Sid: "One more thing, try suggesting lightly that Matt should propose soon, we really need to help him with that."

Dad: "uh...yeah, okay."

Your dad gives Sid his phone number, and hangs up. In a moment, his phone dings.

You: "What happened? Is Sid gone?"

Your dad opens the message, concealing it from you. It's a picture of Alyssa, naked, her big breasts barely covered by her hands. "Hi, daddy. Can't wait to get to know you... better...."

Dad: "Uhm...no, I've...changed my mind about the... situation. This might be good for you....I...really like Alyssa. She could be marriage material for you, son..."

You: "What? You really think so?"

Your dad, looking at the picture of this naked, sexual goddess, your girlfriend, doesn't even look up. "Yeah... positive." He then starts typing. "You should probably keep sanding, I need to...use the toilet..."

So you keep sanding, alone for a couple of hours. Unbeknownst to you, your dad is sexting with Alyssa. She's sending him all kinds of lewd pictures and messages, and he's sending pictures of his erect cock back to her...

Your dad comes back up finally, with a smile on his face. "Sorry, son. I've been.... constipated."

You: "oh, sure...okay."

Dad: "That's a really lovely girlfriend you've got there. You're a lucky guy..."

You: "Thanks dad..."

Alyssa doesn't answer your call again tonight, but you're really tired from the sanding today, so you go to sleep. The next day is very similar, you and your dad sand the rest of the boat. But in the middle, he gets a notification on his phone, and he spends another hour or two on the toilet...

That night, you call Alyssa from your bed. Finally she picks up. "Hey, babe!"

You: "Hey...I miss you..."

Alyssa: "Aww, I miss you too...what did you do today?"

You: "Just kept sanding dad's boat....he tried calling Sid yesterday..."

Alyssa: "Yeah I know.... I was sucking his cock meanwhile..."

You: "What? Oh my god, Alyssa...."

Alyssa: "What? I was just edging him like he taught me...just some light teasing through the day...and in the shower, and while he ate lunch that I made for him..."

You: "...in...in the kitchen? In front of everyone?"

Alyssa: "No point hiding it now, babe. Everyone here knows about our situation. We've been naked the whole time you've been gone. Haven't put on clothes for such a long time now, it feels good. Freeing."

You: "W...what about school?"

Alyssa: "Taking this week off to really focus on Sid's lessons. So far it's been paying off a lot. Isn't that a good idea?"

You: "I think...you should really be going to school..."

Alyssa: "But I'm learning so much! Imagine how much stuff I'll have for you when we finally get sexual....I can't wait for Sid to graduate me....I mean, us..."

You: "I can't wait either..."

Alyssa: "I've gotten really good at edging, Sid says. I usually wake him up with my tits around his cock, licking the tip of it slowly. Just until he's fully erect and awake, then I saunter slowly away, teasing him with my butt as I go make him coffee and breakfast. Then when he joins me in the kitchen I suck on his balls while he eats the breakfast. I make sure not to touch his cock to get it more sensitive."

You haven't cum in a few days now, so you instinctively pull down your underwear, revealing your hard dick, and you start stroking.

You: "... that's...."

Alyssa: "Oh, sorry babe...you probably don't wanna hear this. I'll stop, ok?"

You: "NN...no..keep going..."

Alyssa: "Oh...you enjoy hearing about your girlfriend being naughty with another man, hmm? Okay I'll keep going..."

You start breathing a little heavier now, heat rushing to your cheeks. You are embarrassed, but can't stop yourself from jerking off...

Alyssa: "After breakfast, we go to the shower together, and we soap each other up really well. Sid really likes massaging my soapy breasts and butt. I've been enjoying washing his... whole... body, especially his butt. Sometimes I even lick it clean while I stroke his cock with my hands, he really likes that."

You: "That's ....so dirty...." You say as you keep jerking off.

Alyssa: "Thanks babe, I'm really trying hard for you. Then we shave down there, Sid really likes me completely hairless. Then he usually licks my pussy or asshole to help edge me along. I really like the tingles I get when he denies me an orgasm, it makes it all the more sweeter when he makes me cum multiple times in the evening. Plus, if I edge him correctly during the day, he cums like a firehose...it feels amazing..."

At that moment, you cum on your stomach, and clean the small amount up with a paper towel.

You: "...wait, feels?"

Alyssa: "Uh.. oh...yeah when...he's grinding, I can feel the...pulses of his dick...then the cum...lands on me. Yeah."

You: "Oh, okay..."

Alyssa: "Anyway, I gotta go. Sid needs to spoon me naked to fall asleep these days, hihi. Night babe!"

You: "...ni..." But she's already hung up on you. At least you came, so you fall asleep.