The former Vampire Diaries actress and the Bridge of Spies actor – who have been dating for seven months – recently ended their relationship because they are both too busy to see each other.
A source told E! News: “It started to get hard with both of their schedules. They remain on good terms.”
Before Austin, Nina was in a long-term relationship with her Vampire Diaries co-star Ian Somerhalder.
And Ian recently revealed that he and Nikki are “absolutely” trying for a baby.
He shared: “Well, you know, those are the coolest little things in the world … Standby.”
Ian previously revealed he is ready to have children with his new wife.
Asked if he wanted a family soon, he said: “Oh, hell yes! Absolutely. You know, it’s all about practice… It’s not practice makes perfect – it’s perfect practice.
“It’s the most incredible thing to be happy and secure in something. It’s a pretty crazy time and place to bring a child into this turbulent and insane world – but I really can’t wait to do it and really just love it.”