Grace has warned Imogen to watch her back if she steals Mikey from her.
Since Grace was evicted from the 'Big Brother' house the former Miss Wales and the hunky Liverpool lad have been flirting with each other non-stop.
The 20-year-old brunette, originally from Plymouth, has now warned Imogen there will be big consequences if their flirting develops into something more serious.
Grace said: "I like Imogen. But if something does happen between them my feelings will change. I would never do it to her, so I would hope she'd never do it to me."
Grace and Mikey were an item in the house, but since leaving, she has reportedly been seen smooching former housemate George.
However, Grace has denied the reports, insisting she is saving herself for Mikey
She said: "I miss him. I genuinely do like him and I'm not going to do anything with any other guy until he comes out."
What a load of rubbish...shes bin snogging Sezer AND george...apparently