The mum-of-two was recently stepped out with TOWIE's Mario, and admitted it felt 'lovely' after being with Tom for so long.
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Speaking to a British magazine after the date, she said: "We might have had a cheeky kiss in the club, but I never tell!"
Now the 30-year-old model has admitted former footballer Tom wasn't happy with her seeing Mario, 26.
During her Closer Online Twitter takeover, a user asked her what her estranged husband's opinion was of her outings with Mario.
Nicola replied: "He wasn't best pleased."
She then addressed the claims that Tom cheated with another woman while working in Las Vegas. Another user asked her: "If you could meet anyone in the world dead or alive who would it be and what would you say to them?"
READ: NICOLA MCLEAN TARGETED BY VILE TWITTER TROLLS: "DO YOU HATE YOUR CHILD"
Immediately she replied: "The girl who slept with my husband and I'd ask where her girl code was."
Nicola, who is mum to sons Rocky and Striker, 'outed' Tom's 'mistress' on Instagram earlier this year, posting a picture of a woman who she insisted was wearing her jumpsuit.
One Twitter user asked if she'd ever gotten her jumpsuit back, to which Nicola replied: "Fml no I'm fuming [sic]"
Although she confirmed she had tried to contact Tom's alleged other woman, Nicola revealed her calls hadn't been taken.
Tom moved to Las Vegas to work as a hotel concierge and, when asked if she'd considered moving to Vegas to make their marriage work, Nicola said: "I asked Tom if he wanted that I tried everything x"
Despite everything though, when asked if Tom had been in touch Nicola replied: "Of course we have two kids and back to being friends."