Two hours earlier
Tali was on the engineering deck working at a terminal when Gabby came looking for her, "Hey Tali, what's up?"
"Oh uh, nothing," The Quarian said, sounding not as upbeat as she normally did.
Gabby picked up on it, "What's wrong Tali? You sound sad."
"N-Nothing I'm fine."
"It's because Kelly is at the orgy with Shepard and the others isn't it?"
"She made a promise and Shepard expects those under her command to honor their promises."
Gabby sighed, "You know, I don't get why you didn't ask to go with them."
"Oh please, one second out of my suit in an unsterilized room could put me in the med-bay for a week. A big room with several sweaty people soaking the beds with cum… I would have to leave the mission or become a liability."
"I actually did some research on the place they're doing it at and they have a room meant for Quarians and Turians."
Tali looked over at her, "I'm still, as you humans say, a virgin. Why would she go from a room with people who have years of sexual experience to a room with just me?"
"Because Tali, Specialist Chambers has had feelings for you since she first saw you through Shepard's camera feed," EDI said through the speakers.
Gabby put her hand on Tali's shoulder, "Tali what do you think is more important to Kelly: Her relationship with you, or that orgy?"
Tali looked downtrodden for a moment before turning to her monitor. Gabby was about to leave with a sigh before, "Um yes, I would like to make a last minute reservation for your room meant for Quarians and Turians
When Tali got to the room that Kelly and the others were using she listened for a moment. She took the silence as a good time to ring the bell. It took a few minutes before Kelly, wrapped in a sheet, answered the door, looking surprised to see her standing there.
"Oh uh, hey Kelly. I was wondering if you could do me a favor," Tali said, nervously rubbing the back of her neck.
"Uhm, ok. Come on in?" Kelly said, not quite sure why Tali was here, or what she could possibly need.
As Tali entered she was instantly more nervous due to the sight of Miranda, still trying to pull herself off of Shepard's and Jack's cocks, and Ashley sitting naked next to Liara, neither grabbing the sheets to cover themselves.
Tali turned to Kelly, "Listen I was wondering if… uhm, if you would be willing, and if not it's ok… but would you be willing to…" Tali squinched her eyes shut, "WOULD YOU HAVE SEX WITH ME?!"
Everyone went wide eyed, especially Kelly, "Uhm, how? This room is to… unclean."
"I booked a room meant for Quarians and Turians."
"Uhm-" Kelly said, her hold on the sheet loosening in shock of the question.
"For god's sake Kelly go with her," Everyone turned to look at Shepard, who had pulled out of Miranda and removed her cock and was now standing, "You've fulfilled your promise now go be with your girlfriend."
"Ok," Kelly said, re-wrapping the sheet around herself.
She turned to leave with Tali but, "Hey Chambers," Jack yelled. Kelly turned to her and she threw a cock to her that was unopened in its case, as well as a bottle of lube, "I saw this coming, you can thank me later."
Kelly looked at the lube bottle, 'Sterilizing lube. Keeps down friction with your Quarian or Turian lover while also cutting down on the possibility of infection.'
"The cock sterilizes all the cum that goes through it. Now go have fun."
Before they entered the sterile room they first went through an airlock. After it finished sterilizing everything inside the inner doors opened into the room. It was furnished much like the other room had been, only everything felt different due to the fact that the room was sealed with an air purifier feeding sterile air into the room.
As they entered Tali began to remove her suit, but Kelly placed her hand on her shoulder, "If you think that it's too soon, we don't have to do this."
"I want to Kelly. I want to be able to feel you pressed up against me, embracing me, without this suit in between us."
Kelly sighed, put the lube and cock box on the bed, then helped Tali out of her suit. Once the last piece fell to the floor Kelly let the sheet fall.
They stood there for several minutes, admiring each other's bodies, before Kelly pick Tali up bridal style, much to Tali's surprise, then laid her out on the bed.
She grabbed the bottle of lube, opened it, and squirt a line down the length of Tali's body. She then gently rubbed it over her, starting with around her breasts, across her stomach, then around her opening, both holding their breath while she did around there.
As she finished she climbed on top of Tali and just sat there for a few minutes, "Uh, Kelly… what are you doing?"
Kelly sighed, "I had a serious orgasm a while ago and I'm still tired."
"Do you not want-"
"I want to do this. Just give me a minute."
Kelly breathed in, then reached for the cock. As she inserted it she had to mentally keep herself from playing with it. When the initial rush wore off she rubbed her lube soaked hand over it.
After it was adequately lubed she lined the tip up with Tali's opening then, as Shepard had with her, slowly inserted it, as she did she could tell that Tali wasn't one hundred percent comfortable so she pulled out.
"Kelly?"
"You don't look comfortable."
"*sigh* I guess I'm not ready."
"Then why did you come here asking me to do this?"
"I guess that I was just jealous that you would be sleeping with someone other than me and I wanted to be there with you."
Kelly was about to say something but there was a knock on the door. Kelly looked on a terminal and saw that it was Liara.
After several minutes for the decontamination process she entered, and instantly guessed that things weren't going well.
"Yes Liara?" Kelly asked.
"I had guessed that things may not go very well so I'm here with an offer," she said. Kelly and Tali looked at her expectantly, "If you want, I could initiate a meld with one of you then shift my side to the other. That way while I'm guessing Tali's not… uhm, physically ready to move forward, this'll allow you at least share some of the pleasure that Kelly's felt tonight."
"What do you mean?" Tali asked.
"I mean, I could bring up the image of when Kelly and Shepard were, doing it, put Kelly in Shepard's place and you Tali in Kelly's. I've 'copied' the memory that Shepard had, so all I would need to do is 'copy' Kelly's memory."
"So it would be like a shared dream?" Kelly asked.
"Yes."
"With me seeing Tali in my place through Alison's eyes,"
"And me seeing Kelly in Shepard's place through her eyes."
"Precisely."
Kelly and Tali looked at each other, then turned and nodded to Liara, "Ok, lay on top of each other."
As they did so Liara walked over to them. After they were in as intimate a position as they could get, Liara probed Kelly's mind till she found the memory. After she copied it she started the meld. Once she had Kelly, she started Shepard's memory as she felt Kelly feel and see everything Shepard did, she searched for Tali's mind. Once she was done with her she severed her connection to the two enough so that she wouldn't be intrusive, but stayed connected enough to make sure they stayed safe. Watching much like she had when Shepard was with Kelly. She watched as Kelly and Tali made love to each other, the two memories changing and forming into a new one that both would share, and was as real as if they had actually done the actual deed.