The couple have rekindled their love as they were spotted hanging out together at a music festival, reported Daily Mirror.
Gandy was spotted getting cosy with the 22-year-old actress at the V festival.
"David and Samantha looked well and truly back on track. He had his arm around her as they walked back through the crowd and she was giggling away," am onlooker said.
"Whatever has happened between them seems to have been resolved, and they seemed to be having a great time as they wandered around the louder lounge," it added.
But in July, Gandy said in an interview, "I'm single at the moment. I am not going to go out of my way to see her (Barks), but if I bump into her, I bump into her.