Our sushi sources tell us ... the 2 were all over each other like white on rice ... even licking each other as they munched on raw fish.
On the Seacrest front ... we're told he's moved on.
After all, there are plenty of fish in the sea.
Just like an effervescent James Bond ... Seacrest hit up the famous Monte Carlo Casino in Monaco Tuesday night along with his gang of smokin' hot female friends who we already told you he's definitely NOT hooking up with.
Our eyewitness on scene says there was no limit posted on the table so its unclear how much the A.I. host dropped ... but after 30 minutes of rollin', we're told he lost a majority of his stack and eventually decided to play some roulette instead.
Hopefully, he got on a hot streak that night ... DADDY NEEDS A NEW PAIR OF (DESIGNER) SHOES!!!
Get TMZ Breaking News alerts to your inbox