"It's been quite a few months now that we’ve been dating," Georgie told The Daily Mail. "Ben and I are in a great place."
"We met through friends at an event," added the 36-year-old. "I don’t really know how to describe it. It was a bit of a thunderbolt moment but a thunderbolt that took years before it became anything real.
"We were in different places, but then in April the stars aligned and it made sense to be together and we haven't looked back since. It's very special and he makes me very happy."
Georgie, who was formerly panelist on quiz show A League of Their Own alongside James Corden and John Bishop, split from Dec in 2011 after a two-year relationship.
Ben, who is the UK's most decorated sailor, has previously spoken of his want to settle down.
"Hopefully, one day I will settle down and have a family," said 36-year-old Ben. "But right now sailing is my commitment."
"I'm sure some of my friends wish they could go off sailing all the time," he added. "But sometimes, on a Sunday evening, I wish I had what they have."