Adopted from CuppieCakeAdopts' Stallion OTA: here

Frosty Blizzard was born in the mountains. Used to cold, he studies frost formations in the Crystal Mountains and other parts of Equestria. Because Frosty was born so high up in the mountains, he doesn't freeze easily and often goes outside just wearing a scarf, scaring most other ponies that are nearby. Frosty Blizzard prefers to stay in the Crystal Mountains year-round, and really hates it when the temperature goes above freezing, because, honestly, he'll complain: "I'M TOO HOT! I NEED ICE!". Because his field work in studying frost and snow is usually in the worst winter conditions in Equestria, he keeps his mane in front of his eyes to keep blowing snow out of his eyes.

SSP: x-Short-Hilt-x's Cobblemuse

How he met Frosty Blizzard:
During one of his travels in the winter, Cobblemuse strayed from his usual route to Ponyville. Playing his music all the way, not a care in the world, he wandered deeper and deeper into the cold forest. He suddenly stopped playing as a huge abominable snowman blocked his path. Not wishing to start a conflict, he began playing his flute. Unfortunately, the snowman didn't appreciate good music and threw Cobblemuse hard against the snowy mountain's cliff face. As his vision began to blur, he noticed a pony standing before him. At first he thought it was a ghost because he blended in so well with the wintery scenery. All he heard before he blacked out was, "You'll be okay."

How their relationship grew:
Upon waking up, Cobblemuse was cold, but alive. He scanned his surroundings as his eyes readjusted. The pony from before was preparing something in the middle of what appeared to be an igloo. Cobblemuse was hopeful it was something warm. On the table beside him, he noticed his flute busted in half. A small tear came to his eye as he levitated his precious instrument closer. Hearing the magic from behind him, Frosty Blizzard looked back, "Ah, see? I told you that you would be okay. Sorry about your flute, though..."
Cobblemuse shook his head, "It's alright. I can always get a new one. This one isn't my only one and thankfully it wasn't my most valuable one. Thank you for saving me by the way. My name is Cobblemuse."
The blue pony nodded, "That's a relief. It's nice to meet you. I'm called Frosty Blizzard."
"So why are you out here in the cold? Are you camping? I don't suppose you normally live in an igloo..." Cobblemuse shivered. The scarf he was wearing barely did a thing.
Frosty Blizzard seemed a little insulted, but understood this was a pony who wasn't used to freezing conditions. He blew on the scalding cup of hot cocoa and motioned to Cobblemuse, "Here, you need to warm up." He immediately put out the fire, complaining almost silently that it was too hot. The igloo went nearly dark. Cobblemuse took the cup and began to drink the warm, chocolate beverage.
"Thank you...you're a kind pony~"
"N...no problem. So, where are you from?"

The two of them began sharing stories well into the night. They laughed, they vented, and Cobblemuse understood why Frosty decided to stay in the cold. He was actually rather envious.