The 'Real Housewives of Beverly Hills' star - who split from husband Eddie Cibrian 2010 after he had an affair with LeAnn - announced she is looking forward to spending time with Dean Sheremet and he was helping her in the kitchen.
Brandi tweeted: ''@DeanSheremet is going to help me get my measurements down! (sic)''
Dean was pleased, responding: '''trust your taste buds!''
However, fans voiced their concern as to whether their friendship is a good thing for her children with Eddie, sons Mason and Jake .
The blonde beauty responded: ''My kids do not suffer they are happy spoiled and wonderful. [Eddie and LeAnn] co-parent just fine. Please don't talk about my kids (sic)''
Feeling the need to justify herself further, she added: ''I'm sorry if it bothers some of u that I am friends with Dean but we have remained in touch over the years. He is in LA 4 work (sic)''
Dean met LeAnn at the Academy of Country Music Awards in 2001 and they wed the following year, but divorced in June 2010 following the news of his wife's affair.
Brandi married Eddie in 2001 but separated from him in August 2009 when Eddie and LeAnn made their relationship public.
Take a look back at October's inaugural event.
The film is expected to continue without Mendes' involvement.