Jessica volunteered to wash the dishes since Taeyeon cooked for dinner.

“Taeyeon, can we talk? More privately, I mean.” Krystal approached Taeyeon and asked

“What's going on?”

“It's just something that I don't think my sister should know, just yet.”

Taeyeon raised her eyebrows in suspicion and turned to look at Jessica, still doing the dishes.

“...Okay.”

They both went in to the room and Krystal shut the door.

“Is that necessary?”

“Well, I did say my sister shouldn't know of this.”

“What are you trying to do?”

Krystal walked closer to Taeyeon while the latter backs away but eventually leans against the wall.

“Krystal, what are you doing?”

Krystal leaned in.

“What do you think I'm doing?”

“You realise I'm dating your sister, right?”

“Yes, but I'm just here to tell you something instead of what went through your mind when I did what I did just now.”

Taeyeon sighed in relief.

“Look, when I was following you earlier, I saw Tiffany looking at the both of you earlier.”

“...”

“I overheard her too.”

“And?”

“She said she still loves you.”

“She's my past now, and that doesn't matter anymore.”

“To you, at least. To her, it isn't.”

Krystal grabbed Taeyeon's shirt collar and pulled her in closer.

“I don't know you, so I can't trust you easily. My sister really seems to love you, so if you dare hurt her. I'll hurt you.”

“I already told you, I would never do that to her.”

“And like I said, I don't know you. Am I just going to take your word on it?”

“You should, because I don't love Tiffany anymore, maybe I did back then but I don't anymore.”

“Then what are you gonna do about Tiffany?”

“I've already told her that she should stop having feelings towards me because I don't anymore.”

“And?”

“And she hasn't done anything to any of us.”

“I hope so.”

“Why would you say that?”

“She might try to get you back and if that fails, she might do something to my sister, wouldn't she?”

“I'll protect your sister if that were to happen.”

“Do you really love my sister?”

“I've told you yes for so many times, why do you doubt me?”

“Because, you never loved anyone other than Tiffany.”

“And now I do.”

“Fine. I'll trust you.”

“You really do love your sister, huh?”

“I can't see her that way again.”

“You won't need to anymore.”

“...right...”

The door swung open and Jessica's eyes widen at what she saw.

“Krystal, what are you doing?!”

Krystal leaned in and kissed Taeyeon's cheeks and winked then lets go of Taeyeon.

“This.”

“Krystal!” Both Jessica and Taeyeon exclaimed at the same time

Taeyeon looked over at Jessica and said

“No, we were just talking, that's all. I swear.”

“Yeah, relax, sis.”

“-sigh- seriously, krys.”

“The look on your face was priceless.”

“Ugh.”

“Anyways, i'm going back now. Thanks for the food.”

“Right, sure. You can always come anytime.” Taeyeon said

After Krystal left, Jessica smacked Taeyeon's chest.

“She can come anytime?” Jessica raised an eyebrow

“Well, she is your sister.”

Taeyeon smirked.

“Wait a moment, is this jealousy I sense?”

“Pff, no, why would I be jealous?” Jessica looked away

Taeyeon grabbed Jessica's wrist, pulling Jessica towards her and pushed Jessica against the wall.

“W-what are you doing?”

“Weren't you jealous of this?...Although she was the one pushing me around...”

“What?!”

“That was partially true but there was no meaning towards it.”

“But still I-”

Taeyeon cut Jessica off with a passionate kiss then both of them pulled away, gasping for air.

“I love you, don't doubt that.”

“I didn't and I wouldn't”

Jessica said as she looked into the latter's loving eyes. 

I'll try to push out daily updates for you guys :3