The pop singer said the star in question was “very flirtatious with me”.
It sounds like the last ever episode of Gavin & Stacey might include the one thing James always vowed he'd "never" do.
“It wasn’t the time to start a serious play about serious issues.”
"The James Corden I know is not the person I sometimes see being reported on..."
The Gavin & Stacey creator is starring opposite Line Of Duty star Anna Maxwell Martin in the new play The Constituent.
He previously revealed that he and Ruth Jones haven't actually finished work on the much-anticipated Christmas special yet.