Blossom likes Justin since they were small but they naturally grow apart as they get older.
They meet again at Justin's Alpha Ceremony and that's when it happens… they become mates. Justin just sees her as a sister so is unsure about the mate bond. Blossom on the other hand is happy about being mates but is crushed by Justin’s coldness. 
As Blossom shows him her cute side Justin starts seeing her differently. But will Justin’s feelings for Blossom finally change?

Blossom: My forever Mate