TOWIE's Lydia and Arg both attended the launch of new channel ITVBe in London with their co-stars and appeared closer than ever as they partied together.
Posing for a selfie, Arg stood behind Lydia and placed his hands gently on her hips. Lydia, meanwhile, was all smiles as she took the snap in the mirror.
In the past, Lydia joked that her former boyfriend was like Mr Big, played by Chris Noth in SATC.
Last year, Arg even lived up to the nickname by buying Lydia the identical blue shoes bought by Mr Big for Carrie Bradshaw in the Sex and the City movie.
Does the fact she's calling him her Mr Big again mean they are back together? They are more like Carrie and Big than perhaps they think!
Tonight, TOWIE kicks off with an Ibiza special so perhaps more light will be shed on whether Lydia and Arg are planning on making a go of it again.
Last week, Lydia said they "aren't official" - but also revealed that she and Arg had enjoyed a holiday romance in Ibiza!
Hmmm, we'll have to tune in to find out!