The 30-year-old singer this week (begs13Jan14) confessed to having been "with a man" during a candid chat with fellow stars Jasmine Waltz and Luisa Zissman on British reality Tv show Celebrity Big Brother - and gossips suggested James was the other guy.
But the bisexual insists his sexual trysts with his bandmate amounted to nothing more than threesomes with a girl, sessions he has spoken about in the past.
Taking to Twitter.com to end the speculation, James writes, "Still laughin at this mornings claims. Every1 knows about the 3somes (threesomes) but its never gone beyond that (sic). I mean I love Lee but not That much."