The actress, who met the 41-year-old while working on EastEnders, says it's been a difficult time.
'It's really sad because we'd been together for ten years,' she said.
But Hannah, 34, has rubbished rumours she's already moved on.
She was snapped hand-in-hand with actor Simon Bowman earlier this week.
'A very good family friend has been dragged into the melee,' she told Loose Women.
'We went out to dinner and were crossing the road holding hands. We didn't leap apart. He is a friend.'
Where to now?
How to survive a break up
10 signs your relationship is over
Hannah Waterman weight loss gallery