The 31-year-old is reportedly fuming over her other half’s behaviour in the Big Brother House, in particular his naked run around the compound during which he flashed his genitals to Ivana Trump.
Convinced that her lover has eyes for the billionaire businesswoman, Price is now planning to end their relationship as soon as Alex is voted off the show, The Sun reports.
She has allegedly sent Defoe a string of flirty texts and met up with him in secret earlier this week. They will also see each other at model Danielle Lloyd and Portsmouth footballer Jamie O'Hara's engagement party tomorrow.
"Katie is finishing it with Alex when he gets out," a friend of Price is quoted as telling the newspaper. "She's set her sights on Jermain."