Shirley Holloway said backing dancer Tre, 26, is inexperienced in love, expressing concern over the fact that his new girlfriend has been married before.
"She might hurt him. She's been married before," Shirley told The Sun. "I don't know Cheryl. I've only seen pictures on the internet. Tre said she was pretty big [in the UK].
"He's been dancing for her for a couple of years now, I think. He mentioned that one day last month they went somewhere. He never said she was his girlfriend. But he said, 'Oh, she likes me'. I got the feeling he was maybe quite into her.
"Of course I'm curious to meet her. If this is a serious relationship then I'm looking forward to meeting her because I trust Tre's judgment. If he likes her, then she must be a good person."
Cole and Tre have been spotted on a number of dates in London this week.
Shirley insisted that Tre would never be unfaithful, explaining: "He wouldn't do that. That's not him. He has dated in the past in college and high school but it was nothing serious."
Meanwhile, Cole's mum Joan Tweedy and brother Garry have reportedly given their blessing for the new relationship and plan to meet him this month.