The former EastEnders actress, whose character was murdered by Ben Mitchell, wrote: "So @MrDDyer officially blanked me yesterday."
She added: "Geezer there used 2 b a time when u would banter ... Is this what Enders does ?? [sic]"
DANNY DYER HITS OUT AT KATIE HOPKINS IN HILARIOUS TWITTER POST
Danny Dyer, who plays Mick Carter in the BBC One soap, never actually starred in the show at the same time as Cheryl, due to the fact that her character was killed before the Carter family moved into The Vic.
However, unhappy to hear that Cheryl was upset by the 'blanking' incident, the father-of-three took to Twitter himself to apologise.
He wrote: "Don't be soppy girl. Still recovering from my musical theatre experience yesterday."
He added fondly: "Love to you and the family. ;)"
The awkward Twitter moment came as 37-year-old Danny - whose Walford character is set to have a seriously miserable Christmas - reportedly asked former TOWIE star Kirk Norcross to be godfather to his young son, Arty.
He and his partner had their one-year-old son christened in an intimate church ceremony, where reported godparents Kirk Norcross and former Page 3 jailbird Tracy Kirby swore to care for the youngest child of Danny and longtime girlfriend Jo Mas.
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Speaking on the Weekend Hangover Show on Fubar Radio, close friend of the couple, Jonathan Sothcott, said: “It was lovely, there were a group of us there, most of the Carter family were there from EastEnders.
“Kirk Norcross is a great guy and he is godfather. He is a lovely fella.
“Tracy Kirby is the godmother. She was a famous Page 3 girl in the 80s.”
He added that, despite some people's reservations over the choice of godparents, Arty will be a well-protected boy.
He added: “He’s got no worries. He is definitely on the firm.”