Katie Price has alleged that Dwight Yorke has not yet got in contact about their son Harvey.
The 18-year-old is currently recovering in hospital after being rushed to intensive care last week with breathing difficulties.
Yorke is not known to have any form of contact with his son, who suffers from multiple disabilities, but Price says that she expected him to get in touch once Harvey was hospitalised.
"Whether you want to be in your son's life or not, you still created him and he's still your son," she told New magazine.
"If you know your son is in intensive care and there's a chance he could die, as a human being with feelings you should get in contact."
Yorke, who split from Price shortly before Harvey was born, initially denied being his father until being proven wrong with a paternity test.