Three weeks ago it was claimed that Liam Gallagher, her husband of five years, had fathered a baby with New York journalist Liza Ghorbani – and reportedly he still hasn't even called his soon-to-be-ex wife to explain himself.
Nicole has been picking herself up and brushing herself off after the scandal hit the headlines and has now returned to Twitter after maintaining a social networking silence since mid-July.
"She can't get hold of him. She's absolutely devastated"
She tweeted an inspirational picture of three friends drenched in sunlight with the words: "Best friends are the people in your life that make you laugh louder, smile brighter and live better."
Nicole also retweeted the message: "Remember to NEVER let people, life & unpleasant circumstances change the HAPPY vibrant person you USED TO BE #KeepGoin!"
Despite her new positive outlook, the former All Saints singer has been left confused and hurt by Liam's behaviour, with her mum, Mary, telling Grazia that the Beady Eye frontman has not tried to repair their relationship since the news emerged.
"He phoned her the day before it came out and he hasn't been in touch since," she said.
"She can't get hold of him. She's absolutely devastated. This is so out of character for the Liam I know."
It seems Liam might now have more time on his hands to build a few bridges, as his band have had to pull out of gigs in Belgium and Japan.
Beady Eye's guitarist, Gem Archer, has sustained an unknown injury and been forced to cancel appearances at the Lokerse Festival in Belgium and Summer Sonic in Tokyo.