Daemon thought his dragon Caraxes wouldn't mate with any dragon, due to the dragon's behaviour and ferocity but he was wrong after all... It was known Caraxes called Blood wyrm would never choose or let a dragon be near of him, only Daemon alone. But this changed when you returned from Essos, as a Targ_aryen woman you needed to be near of the Red Keep at least for a few weeks for Viserys' words and political reasons. Something you clearly didn't want to listen or even tried to.
When you returned you were greeted by all of the family including maids, lords and ladies. You had a supper that night, everything went surprisingly normal sparing the little jabs or jokes that fell from Aemond's mouth or Aegon's scoffs, but what caught your attention was that your older cousin Daemon was a bit too quiet, something really odd coming from the Rogue Prince
You just decided to brush it off like nothing happened. A few days passed and Daemon's turmoil couldn't help but get even worse, he saw how Caraxes reacted to your dragon's presence, an event that has never happened, Caraxes wanted to mate with your dragon... Much less helped the little sting he felt in his chained heart every time he looked at you after years of being apart, you on Essos and he on Westeros.
A week passed of your arrival and that early afternoon he decided to find you and talk to you about this odd reaction Caraxes had about your dragon