The cheating claims came about after Nicole was pictured leaving the Tape Nightclub in London with Calvin holding his arms while they also partied together in July.
Nicole called such cheating claims 'ridiculous' and says he's more than happy with her man.
Speaking to Glamour magazine, she said
"It was all: 'She’s the biggest cheater', I’m like, excuse me? I was walking on cobblestones, almost fell, grabbed him, two frames and that was it. It’s ridiculous."
Speaking about her relationship with Grigor, Nicole added: "I am happy. I’m in a really good, solid, more balanced place in my life. I’ve grown a lot as a woman.
"My grandma always used to say, to find the person you wanna marry, you have to find the person you wanna work on your relationship with for the rest of your life. That’s the key word: work."