Yo yo yo here we are! Time for some headcannons :P

Overall, the cmc are about the age of the mane six in season 1, so young adult. None of them have kiddos and they're all just dating rn. ALSO Idc what the cannon is, Applebloom's talent is potions, SweetieBelle's is singing, and Scootalo's is stunts. Frick the matching cutiemarks.

AppleBloom and Pip:
- AppleBloom and Pip go all the way back to Miss Cheerilee's class. They knew each other but AppleBloom focused more on the CMC. However, after the three got their cutiemarks they didn't need to focus so hard on their club and starting making more friends. One of which was Pip. A few nightmare nights after the three had their cutiemarks, the whole class put on a play of the defeat of Nightmare Moon. Applebloom and Pip were AppleJack and Pinkie Pie respectively. They both had a blast playing the roles and got close during the practices. Next nightmare night, the two were good friends and Pip asked AppleBloom out with a caramel apple. She accepted and the two share a sweet relationship with Pip being blown away at AppleBlooms potions and AppleBloom full-heartedly going on Pip's wild adventures. (Side-note, Pip's talent is adventuring and navigating)

Scootalo and Terramar:
- After the adventure in Seaquestria, Scootaloo kept visiting as it was the one place she felt free. She could fly under the sea and was free to be who she wanted. Her and Terramar grew close with each visit, since he was the one pony she knew and he loved to show off the beauty of the sea kingdom. These two were the first of the CMC to being dating, and when they did, Scootaloo choose to stay undersea with him, being adopted by a friend of Terramar's mother. The family had always wanted a child but weren't able to conceive. Scootalo loved it as, previously, she had lived at an orphanage and was almost too old to stay.
- These two for sure end up together in the end but not without some bumpy parts in their relationship.

Sweetie Belle
- Little Sweetie doesn't have a special somepony at this age. She never really found somepony who stole her heart so she chooses to stay single for now. She struggles with having her two closest friends be dating. They often spend time with their special someponys and leave Sweetie behind. At first it really got to her but after time she learned to make other friends too and how to be happy for her best friends. Whenever shes not with AppleBloom and Scootalo, SweetieBelle hangs with Toola Roola and Coconut Cream.