The last straw for you and Rivita, was Meracydia's decision to enslave the native Meracydia dragons, those part of Tiamat's horde. The two of you had stolen the Emberstone at night, and while transformed Rivita flew you to one of the continents called Pyrrhia, which is filled with dragon species.
You both decided to have a quiet life in Pyrrhia, which ended up easier than you expected, as Rivita discovered that he could permanently transform the two of you into dragons. After some deliberation you both agree, and undergo the transformation. You both lived in a small scavenger settlement called Drawbridge, acting as its defenders while they'd also look after you.
A few months had gone by, and Rivita was gently laying over your body, in his permanent crimson dragon form. He gently groomed the top of your snout, bringing his tongue around your horns.