The pair, who are thought to be dating after he dumped Hollyoaks star Jennifer Metcalfe, didn't help relationship rumours by sticking closely to one another all night.
[Backstage at the NTAs]
Looking very much a couple, the skating duo stood close to one another, drinking and talking at the after-show party.
Skater Longchambon ended his two-year relationship with Metcalfe on Christmas Day over the telephone - but she was nowhere to be seen last night.
[Metcalfe and her ex]
It was thought the actress was planning on having a showdown with Ghadie at the Awards, but instead she has jetted off on holiday to avoid running into them.
[Longchambon and Ghadie on DOI]
A source said: "She is on holiday in Dubai with her friend. It's a trip to have fun in the sun and get over her split from Sylvain.
"Hopefully she will be away for a while longer because she won't want to see pictures of Sylvain and Samia posing together looking happy."
Photo gallery - the NTAs red carpet: