Gareth Southgate’s squad lost 2-1 to Croatia during Wednesday night’s semi-final, leaving fans utterly heartbroken.
Willoughby’s nine-year-old son Harry was among those mourning the loss, with the TV presenter sharing a picture of him holding his head in his hands as the final whistle blew.
She captioned the shot with a broken heart emoji and the words: “... for so many reasons he will never forget his 1st World Cup... x.”
Fans were close to tears with one commenting: “This actually make me feel so sad.”
Another sympathised saying: “50 years later and I’m still like that!”
Others told him to get used to the disappointment that comes with being an England fan, with one posting: “Getting them used to the disappointment early.”
Another wrote: “Welcome to being an England fan.. plenty more years of disappointment to follow.”
A third said: “A picture that sums up just how the nation is feeling #gutted.”
A host of celebs led the praise for Southgate and his team, including David Baddiel who thanked them all for “giving us this beautiful Word Cup run”.
The comedian, who teamed up with Frank Skinner and the Lightning Seeds on football anthem Three Lions, tweeted: “It’s been a ride.”
Cheryl tweeted: “We still changed the history of the past 28 years I’m proud of how far we came and proud of Gareth Southgate. Congrats boys.”
Piers Morgan wrote: “Gareth Southgate & his young England team did the country proud.
“We went a lot further than I thought we would & performed with great credit on & off the pitch.
“Losing sucks but the future looks very exciting with this talented group of players. End.”
England will now play Belgium for third place on Saturday with Croatia and France going head-to-head on Sunday afternoon for this year’s final.