Holloway's loved ones have assured the former X Factor judge, whose marriage to Ashley Cole broke down amid allegations of his cheating, that her 27-year-old partner would "definitely be faithful".
A university friend of Holloway's told The Sun: "He's the type that would want to marry if it's the right girl.
"He'll definitely be faithful and very trustworthy. In my opinion, he'd never cheat."
Another described the backing dancer as "a committed guy" who is "family-orientated".
A source told the publication: "They wouldn't have revealed they were an item unless they were in it for the long term. Marriage could definitely be on the cards."
The couple have been dating for less than a year, but are already said to be "very serious", with Cole apparently agreeing to meet Holloway's family over Christmas.
However, it has been claimed that both of their parents are concerned about the relationship and fear the pair "might hurt" each other.
Cole is said to have hired Holloway as a backing dancer on her upcoming arena tour.