What is their age gap?

They’re 6 years apart

- She was 20 and he was 14 when they met

- In this flashback’s timeline (when they’re making out, etc), he’s 19 so she’s 25

- Since this is 7 years in the past, the story’s current timeline should be in 3 more years (once he’s a proper king) where I’m guessing she’ll be 28 and he’ll be 22