"There's a reason for that, actually. I'll tell you some other time when there's a little more privacy," Jack promised.
He turned to Martha and smiled, pausing to take a sip of his drink. "I met Robert back during World War II. It's a long story, but the short version is that the two of us go way back. I never thought I'd see him again though once it all ended. Especially here in Cardiff. Which reminds me..."
Jack turned his attention back to his old friend and said, "If you need any help with anything, just ask. Alright? I'll make sure you have my mobile number before Martha and I leave."