According to The Mirror, her name is Tara Derakshan and she is a marketing manager who speaks four languages: Arabic, Swedish, English and French.
He is thought to have been single since they went their separate ways in November 2015, however that might not be the case for long judging by these latest pictures.
One Instagram user asked: "Omggg are they back together?
They broke up two years later and the actress continued with her role as a ghost, while he left the show.
Aidan, who had the country swooning after he stripped off as the dashing Ross Poldark, went on to date Sarah Greene for three years.
The actress plays Demelza in the hit BBC drama which returns next month.