Your lab assistant, Jenny

"Hey boss. Hows the fucking?" Jenny smirks at you.

"Hi Jenny? What are you doing here?" You brush past her remark.

"Couple things actually. You forgot some of your notebooks at work, and we made a breakthrough. I have been trying to call you for hours, figured you were too busy getting your dick sucked to check your phone. But boss, you will want to know about this." Jenny is practically bouncing in excitement, this must be something huge. Did they find a cure? You are ashamed at a small part of your mind that is disappointed in the possibility.

"What did we find out?"

"So, one of the semen samples we got had a large quantity of dead viral cells."

"But men are immune, we can't even be carriers."

"I know. Which is why this stood out. And why were they dead? Previous viral cells we found in patients blood survived for extended periods, these were dead within hours. We had the provider come in and provide another sample, and it was clear of viral load. We grilled him on diet, habits, fucking everything about his life. Nothing. It wasn't until someone asked him to provide another sample in the exact same way as the first one and the virus came back that we figured it out." I had never seen Jenny so excited.

"Jim, who is it honey?" Maddy yelled from the couch.

"Its Jenny, from work. She said they made a breakthrough!"

"Oh my god. Jenny, get in here, let's hear it," Jenny looked to you and you waved her in. We joined the ladies in the living room. "This is my friend Becky and her girlfriend Ruby."

"You made a breakthrough on the virus? I found out I had the virus yesterday." You notice Jenny flinch and take a subconscious step back when Ruby reveals she is an addict. "Did you make a cure?"

"No. Ummm. I don't know if I should share the news with, uh, civilians." Jenny's abrupt shift from excitement to nervous worried you.

"You know whatever you tell him he is just going to tell us later, so you might as well tell us." Ruby had deflated as well. You nodded and Jenny caught them up.

"So, the dumbass hadn't jerked it into a cup like we asked him to. No, the idiot had his girlfriends sister who has SAD blow him and spit half a mouthful into the cup. The viral load was from her spit. That is why it was dead in the sample, because the virus accomplished its purpose. It found semen, and died happy, seemingly consuming the saliva in the process. That is why SAD girls report having dry mouths after consuming cum. But after some testing of said SAD girl, and other volunteers, we discovered that the virus thrives in saliva." Jenny quickly glanced between you and Becky. "When we had a SAD girl spit into a petri dish with samples from non-SAD girls the view was astonishing. Viral cultures swarmed nearly instantly."

"Wait, does that mean..." You trailed off, thinking about the implications of the news.

"Yep. We found our transmission vector." Jenny glanced at Becky again. Maddy, who had heard me prattle on about virology to almost warrant a college credit, picked up the thread.

"Wait, so it is an STD." She swallowed hard. "Just spread through kissing."

"Not just kissing, but yeah. If SAD girl spit gets in a non-SAD girl mouth, new girl gets SAD." I'm sorry Becky, but if you have kissed Ruby within the last 48-72 hours, or even shared a drink, you almost certainly have SAD." Becky merely nodded.

"That makes sense. Now I understand why that cum I shared with Ruby was so tasty." You were glad she didn't mention that it was your cum, but the thought reminded you that before she ate Ruby out, Maddy kissed Becky. "Hell., I probably gave it to you Ruby. I am so sorry baby."

"Since Ruby's symptoms are much more severe it is likely she has had SAD longer than you have."

"This shit doesn't get worse as long as we keep drinking cum, right? At my stage how often would I need a dose to maintain it?" You and Jenny share a look.

"If the only symptom you have is that cum tastes good, you are very early stages. Once very 24 hours for sure, possibly up to 36 or more. We don't often diagnose this early because cum tasting good isn't something most people notice right away." You tell her.

"So, if I have been sucking cock about every other day I would never notice a change?"

"It might develop, but very slowly. I suspect in a few months you would develop a slight craving."

"That explains it then. We are in an open relationship, and there are a few guys I have been blowing, and a couple gals I have met up with a few times."

"I don't sleep around, but I do enjoy watching her enjoy herself." Ruby smiled at her girlfriend.

"Jenny, we were about to have some drinks, would you like one?" Maddy stood and started toward the kitchen. As she walked past you she kissed you on the cheek and whispered in your ear. "If she stays do you want me to spit in her drink?"

You are stunned to silence as you watch Jenny try to decide.

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