Now, the reality TV star has issued an apology.
Taking to Twitter, Jack apologised to his 685,800 followers and This Morning for his no-show.
"I wanted to apologise to everyone @thismorning & the viewers for my no show yesterday," he wrote.
I got over excited at the late night filming of the CGD wrap party and obviously regret that now.
"I won’t make excuses. I got over excited at the late night filming of the CGD wrap party and obviously regret that now.
"So sorry once again & hope I get the chance to make it up to everyone."
His followers were quick to respond to Jack's message.
"Not very professional Jac!! What’s more important work or play?" one asked.
Another wrote: "Won’t have done your reputation much good Jack! Don’t forget how you got where you are right now. Bit disrespectful just to not turn up to a pre-booked event. Hoping the hangover wasn’t too bad!
"Unprofessional, just think what would happen to us that do regular 9-5 jobs if we did this?" a third wrote.
One follower defended him, saying: "Listen flower worse things have happened at sea don’t worry about it as long as your healthy and happy that’s all that matters."
A report in OK! magazine shed light on what exactly Jack might have been up to.
A source was quoted as saying: "I saw Jack and Lauren kissing throughout the night.
"The pair had been romancing throughout the filming of the whole series, but the relationship had fizzled out… until now.
"At the finale party, Jack was seen flirting with both Lauren and Chloe Ferry, but was seen snogging the face off Lauren Goodger."
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