The former "Gladiator" star and the "One Big Happy" beauty called off their engagement last year and McIntosh has warned Brook's new flame, reported Daily Mirror.
When asked about her new relationship, he said, "It doesn't really bother me now, but I feel sorry for Jeremy because he looks like a decent lad...
"I think she's more focused on herself and her career. I think she's incapable of having a normal relationship."
The 29-year-old star, who is currently in a relationship with Juliet Bakos, said he was not ever "physically super attracted" to Brook.