The Australian actor, who is best known for playing Heath Braxton in Home and Away, said that despite being single, he will not make a move on professional dancer Luda Kroiter because she used to date his friend and co-star Luke Jacobz.
Ewing told The Daily Telegraph: "She is very impressive. I like her, she is full-on. She's out there [but] I don't think I could do that to a mate."
Jacobz, who plays Angelo Rosetta in Home and Away, won Dancing With The Stars in 2008 and continued to date partner Kroiter for a few months after the show ended but they later split.
Ewing was recently nominated for CLEO magazine's 'Bachelor of the Year' award but lost out to Olympic swimmer Eamon Sullivan. Sullivan later said that Ewing should have won instead of him.
Other celebrities taking part in the reality TV show include model Lara Bingle, My Kitchen Rules judge Manu Feildel and singer Damien Leith.