Arthur expressed sadness at the fact the Duke and Duchess of Sussex had decided to depart as senior members of the Royal Family.
When asked by Eamonn how he felt about the duo leaving, he told the host: “I can’t believe this has happened.”
He soon divulged further information about how the relationship with Harry had changed after Meghan came into the fold.
“For the first year I thought she was sensational,” Arthur said, but he soon explained how things had quickly gone downhill.
READ MORE: Prince Harry lost temper in furious rant to Queen – ‘What the hell!’
“I did lots of trips with her,” Arthur continued. “I went to Morrocoo and I went all around Britain (and) Ireland and she was great.”
However, he explained: “Four times, maybe three times, I asked the Palace if we as a media group could meet Meghan and it never happened.
“I think if she had met us things might have been different.
“She might have seen that we’re human and unfortunately she did get some bad press, and that was a mistake.”
“Harry’s badly needed here. I hope in March, he’s got until March to rethink it, he comes back,” he noted.
Elsewhere on This Morning today, Eamonn was forced to apologise to ITV viewers for a major geographical blunder.
He and Ruth were joined by paddleboarder Buster live from Weymouth after a clip of a local seal named Sammy had been joining in with the fun off the coast.
However, when introducing Buster, Eamonn told viewers they were about to be transported to Devon – not Dorset.
“Devon has another local celebrity, or shall I say seal-ebrity,” Eamonn told viewers.
Ruth added: “Sammy has popped up in various locations along the coast over the past month and he has even started jumping on paddle boards.”
The pair then said they were cutting to a beach in Devon, even though Weymouth is located in Dorset.
Pointing out the error, one fan tweeted: “#ThisMorning Geography lesson Weymouth is in Dorset not Devon!”
This Morning continues weekdays at 10am on ITV.