The French professional, 32, was clearly frustrated after his ex-girlfriend Jennifer Metcalfe, 29, spoke about their split for the first time in a magazine interview.
He took to Twitter on Tuesday night after spending the day in rehearsals with Coronation Street star Samia, 30.
Growing closer: Sylvain Longchambon and Samia Ghadie in training for Dancing On Ice
Heating things up: Samia looks comfortable in Sylvain's strong arms
Later that day, when he was criticised for changing his Twitter profile photo to one of him and Samia, Sylvain responded with a series of retweets supporting him and his own statements.
He got involved in a debate with one Twitter user, who had commented it was 'harsh' of him to change his profile photo so soon after the end of his two-year romance with Hollyoaks star Jennifer.
Twitter defence: Sylvain hit out at his critics on Twitter on Tuesday
Tentative: Samia looks nervous as they go through one of the moves
'As u said u don't know the exact circumstances...'
His Twitter defence comes after Jennifer told Now magazine about their break-up on the phone on Christmas Day.
She said: 'I felt completely shocked. I asked him if there was any chance of working it out and he said, "No."
Chemistry: Following their first skate in Week 1, the couple will have two weeks of rehearsals before Sunday's show
However, Jennifer said she liked Samia and didn't hold a grudge against her.
She added: 'She seems like a nice girl. I have good friends who've done bad things and it doesn't change the fact that they're still nice people.
'If it was me I wouldn't want to start a relationship with someone who was still in love.
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