The pair have been rumoured to be an item for the past few weeks, after appearing together on ITV's I'm a Celebrity... Get Me Out of Here!
When asked how their first evening together went since leaving the jungle, Essex told The Mirror: "Our first date was amazing."
He also responded "yes" when asked if they were an item, adding: "I'm very happy. Look at her. She's beautiful."
Willerton said: "We've had a lovely night together. The party was amazing. They know how to have a good time here."
The couple are said to have enjoyed a meal at McDonald's together on their way home from the show's wrap party.
Willerton continued: "We had 20 McNuggets, two Big Macs, fries, apple pies… the works. It was lovely."
Joey Essex previously dated his TOWIE co-star Sam Faiers, while Amy Willerton had been in a relationship with businessman Mohamed Shawesh.
The pair were evicted from the I'm a Celebrity jungle together on Friday (December 6), before Kian Egan was crowned King on Sunday.