Your wife's ex girlfriend

"Hey babe, I am going to be a little late, just have to go over some new test results at the lab." You called your wife to let her know about the delay.

"Fuck, I was just about to call you and ask if you could leave early. We... I need your help." She seemed frantic, which worried you. It took a lot to get Maddy worked up.

"Who is we? Maddy, what is going on?"

"I will explain when you get here. Just hurry please." You decided you wife's distress overruled any work pressure and sent yourself the test results, you could always read through them at home once the emergency was resolved.

"Hey boss, whats up?" Your lab assistant Jenny asked, having seen you frantically packing.

"Maddy just called, said she needs my help urgently. She didn't say why."

"Ooh, maybe she is dying for a taste of your cock. Think she is laying there, waiting for you to pump your load down her throat?" Jenny winked and mimed giving a blowjob and a shiver went down your spine. Did Maddy have S.A.D. (Semen Addiction Disease) the addiction you were working to cure, the overwhelming need to swallow semen? It was a very real possibility, the disease seemed to spread randomly, with no transmission vector we have been able to identify. Symptoms started slowly, but the longer a patient went without their fix the worse it got. Stage 1 patients need approximately 1 'dose' per day to be satiated, and if they didn't get that they quickly progressed to stage 2, where their body started making them hornier and hornier until they swallowed cum. Stage 2 patients had been known to beg strangers to allow them to suck their cocks, and even when they get their fill they are only content for a few hours until the cravings return. At stage 3 patients seem to always want cum, and the one patient you have seen at stage 4 was unable to form sentences, they were reduced to a feral animal intent on sucking any cock they could get their hands on. "Earth to Jim, get your mind out of the gutter." Jenny laughed and you realized you had been staring at her breasts while imagining your wife begging for my cum. You felt your face turn red.

"Sorry Jenny, you just got me worried. I never even considered that she might get it."

"No worries boss. And hey, if she does, she will be one of the lucky ones. Her husband is leading the charge to cure her, and not to be crude, but I have seen your load and we both know she won't be going hungry any time soon." Now it was Jenny's turn to go red. As a part of the testing every man in the lab had ejaculated into cups to analyze the contents and see if the addicts reacted to different samples differently. As far as you could tell one load was the same as any other, but your load had been easily double the volume of the next largest load, and that was before you started a medical cocktail that increased your output. Your mental image briefly changed from your wife begging for your cum to an image of Jenny on her knees, naked, with her tongue out, waiting for you to feed her your family recipe. You shook yourself out of your reverie and finished packing.

"I will see you tomorrow Jenny. Can you make sure the test samples are put back in the fridge?"

"Of course boss. See you tomorrow." Jenny waved and you swear her eyes darted down to your pants, where you could see a visible outline of your burgeoning hard on. You hurried home and rushed inside to find your wife.

"Maddy, I'm home! What is wrong?" You entered the living room to find your wife talking pleasantly to two women, one of whom seemed vaguely familiar.

"Hey hon, sorry if I scared you. Do you remember Becky?" You glanced at the women and realized you did actually know one of them. It was Becky, Maddy's ex girlfriend. The two of them had dated openly for a few months but broke it off when Maddy realized she wanted to be exclusive with you and Becky wanted to be with someone else.

"Hi Jim. Long time no see." Becky turned to you and smiled warmly. "I am sorry to bring this problem to you, but I didn't know who else to turn to. I know we don't really know each other, but if Maddy trusts you then I know you must be a good person."

"Of course. Any friend of Maddy's is a friend of mine. What can I help you with?" You were starting to calm down, your wife didn't have the disease. But did Becky?

"Oh, yeah, I guess Maddy didn't have time to tell you. This is my girlfriend Ruby." She gestured to the other woman sitting by her side. Ruby gave you an odd look you couldn't interpret. "Ruby has SAD, the doctor said she is on the cusp of stage 3." As you moved to sit next to your wife Ruby's odd look made sense. It was the look of a proud lesbian wrestling with her desire to suck your cock.

"Oh no. I can get you set up with an on call donor, fast track the paperwork, we will do everything we can to help you."

"Jim, that isn't enough. Look at the poor girl. We had to take precautions and tie her down so she didn't jump you as soon as you walked in. She is in no shape to go down to the clinic." You looked and realized you had missed the fact that Ruby's feet were tied to the leg of the couch and her arms were obscured behind her but you assumed they were most likely tied as well. "She needs her fix now. I volunteered you." You turn to your wife in surprise.

"You did what? You want me to give her my cum?"

"Of course my love. I will get you off and then you just make sure you give your load to Ruby. After that we can decide what to do long term. Now hurry up, get those pants off and fuck me." With that Maddy started undoing your belt, unconcerned by the audience.