Image imported from derpibooru 
Original Description:
 
“And here… is the golden oak library!” Raspberry chirped excitedly. “Well, version 2.”
 
“Raz, we know.”
 
Blackberry nodded in agreement with her brother.
 
“But you’ve been away at the farm for weeks! Are you sure you still know your way around?”
 
“Absolutely.”  
Blackberry started to shiver violently, pointing up at the sky. “Oh yeah, it’s pretty cold, huh? Let’s go inside the library!”  
%%  
“Oh, hey Raspberry.” Moondancer greeted the pony, smiling with a cup of coffee. “Let me guess, these are your siblings?”
 
“Yep! This is my big sister Blackberry. Say hi, Berry!”
 
“Hi.”
 
“And this is my bigger brother Huckleberry!”
 
“Hello, Miss.”
 
“Oh please, just Moondancer. Are you all in here for the warmth, I’m guessing?”
 
Raspberry nodded. “Is Diphthong here?”
 
“I think so, but I haven’t seen him for hours. I think he’s stuck with a book again, you know how that is.”
 
“No, but my brother does!”
 
“Okay, I’ll leave you three alone.”
 
“Bye!” Raspberry yelled, despite the unicorn only being feet away. “Have you two met Diphthong?”
 
They shook their heads.
 
“I think you’ll like him. He’s just like you, brother. And Berry, he knows a lot about poetry.”
 
“Really?” Blackberry said excitedly, to which her sister nodded. The door opened with a yellow burst and who was to come in but- “Diphthong!” Raspberry ran right over to the pony.  
“Raspberry? I thought you were giving your siblings a tour or something.”
 
“If you took your face out of that book, you’d see she is.” Huckleberry snapped back. The unicorn lowered his book and looked- unamused- at the earth pony.  
“You going to introduce us, Raspberry?”
 
“This is Blackberry Molasses, my big sister. And this is-“
 
“Her bigger brother, Huckleberry.”
 
“No last name? I mean, Sugarcane, Molasses.” Diphthong chuckled, gladly angering the stallion.
 
Huckleberry blushed angrily. “Chip.”
 
The unicorn shifted his attention to the third triplet- “so, Blackberry, huh? Your sister told me a lot about you. I heard you’re into poetry?”
 
“Oh, yes! I love poetry!” She clasped her mouth shut, even more surprised than her siblings over her sudden burst of syllables. “Who’s your favourite artist?”  
%%  
Okay, so don’t know how well I did with this, but what I was getting at is that Huckleberry likes Diphthong, and he is more like “miss me with that gay shit”. And Blackberry also likes him, something Raspberry expected.
 
Also, the triplets are purposely like their relatives. Raspberry is exactly like Pinkie, but smarter. Blackberry is like Marble, but more sad then shy. And Huckleberry is like a fusion of Episode1 Twilight and PreFriendship Tempest.