Looking for a yaoi or bl ( I CANT REMEMBER)

The yaoi or bl is a about a dragon and guy that were soulmates in their past life and they had a child and they were king and concubine. There was a war going on at that time and the king had to kill the concubine cause they were part of the revolution. During the present time, the dragon remembered his past life by touching a stone that the family had and then made his lover touch the stone so they could remember and from there one of them started having nightmares with a baby dragon that turned out to be their baby from their past life. （/TДT)/