"Meet the newest addition to the krew @porkybasquiat", Sophie captioned a cute picture of Porky on Instagram, where she could be seen hugging the dog. The couple confirmed their engagement in corresponding posts on social media.
"I am very happy", she coyly told Marie Claire.More news: Pentagon looking into reported death of Islamic State's 'White Widow'
Sophie and Joe have been dating since November, after they were spotted acting cozy at a concert in the Netherlands.
"I was like, 'You need to factor in a Game of Thrones wedding by the way.' They [the cast] have all got to be there so the whole thing has got to shut down".
"You do feel like you're living in a fishbowl", she said. "It's frustrating (that) it's the most mundane things that make the news - how boring!"