So this is Some New Next Gen Ships! 
with Short Back Stories
 
Twilight and Prince Blue Blood 
Prince Blue Blood Met Twilight after before she came a Princess, he was quite upset after Rarity rejected him at the Gala the two began dating and when Twilight became an Alicorn, Blueblood asked Twilight to Marry her and she said yes.
 
Applejack and Thunderlane  
As Applejack had a hard time after Granny Smith’s passing, as her and Rainbow dash traveled to Manehattan she had ran into Thunderlane and Gained a crush on him, Sooner or later the two began dating and later on married with two Children.
 
Rarity and Doctor whooves 
Ever since Rarity traveled with the Doctor she suddenly got an interest in time travel and space, the two began dating and Rairty became Pregnant and Doctor whooves asked her to Marry her and she said yes they only have one Child.
 
Pinkie Pie and Pokey pierce 
As Pinkie Pie was waiting for Cheese to come back but he never did, She met Pokey Pierce in her travels, the two had a Connection and suddenly fell in love and began dating for all almost a month and than Pokey asked Pinkie Pie to Marry him and she said yes now they have three children.
 
Fluttershy and Donut Joe  
as years passed Fluttershy came out more and try meet new ponies, when she met Joe she Gained a crush on him and was scared to tell him the truth but when Joe came up to her and ask her out she said yes. a little while later Joe had asked Fluttershy to Marry him and later they had a Son.
 
Base By Sori-Adopts-n-Bases 
Base link: Hiya Base Pack