The actress's chief bridesmaid Kim Crawford claimed that she attempted to sabotage her marriage while at the star's hen weekend in Paris earlier this year.
Crawford flew from Australia to Paris for the hen do for her friend of 14 years, but shortly afterwards quit her wedding role after a serious row.
"Martine invited me to come along to her wedding dress fitting and afterwards we were chatting over champagne," Crawford told The Sun.
"Everything was fine until out of the blue she told me my husband Jason had kissed another woman on his stag do two years ago. I was distraught and it felt as if Martine was enjoying watching me in pain. I ran out of the restaurant because I needed to be alone.
She added: "We haven't spoken since and I don't want anything to do with her. She's evil, nasty and vindictive and I believe she's jealous of my relationship."
McCutcheon is due to marry Jack McManus in Lake Como, Italy next weekend.
The former EastEnders star recently dismissed rumours linking her with Strictly Come Dancing.