The former lovers were pictured strolling in New York City on Tuesday - just hours after Italian judges ordered them to return to court for a retrial for the murder of British student Meredith Kercher
The tryst has already led to concerns that the couple should not be in contact with each other now they have been recalled for a retrial.
Reunion: Amanda Knox and her former boyfriend
Raffaele Sollecito were pictured in New York on Tuesday - just hours
after Italian judges ordered them to return to court for a retrial
Gossip: The meeting has led to rumours that the pair have become romantically involved again
James Terrano, who is reportedly Knox's boyfriend, was nowhere to be seen
The meeting has led to rumours that the pair have become romantically involved again. James Terrano, who is reportedly Knox's boyfriend, was nowhere to be seen.
As the pair walked and chatted along the street, Knox's mother walked behind. One onlooker told the Daily Mirror that the pair looked like a couple who had been together for some time.
He said: 'You only have to look at him to see he still holds a huge torch for Amanda.
'They never once stopped chatting. It's astonishing they are allowed to even talk to each other, let along see one another, considering they are both suspects in a murder trial.'
Amanda's mother Edda Mellas was pictured strolling behind the pair while Raffael looked animated during their conversation
Knox declined to comment on the reunion, with Sollecito admitting the pair have much to plan
With mum: As the pair walked and chatted along a street, Knox's mother Edda Mellas (in white and black) walked behind
Chatting on the phone: James Terrano, who is reportedly Knox's boyfriend, was nowhere to be seen
Amanda Knox was photographed speaking on the phone while her former lover stood with his arms folded close by
Hours before their secret reunion on Tuesday, Italy's high court faulted the acquittal of Knox and Sollecito by the appeals court for the murder of Miss Kercher.
The court ruled that the 21-year-old's death was a 'sex game gone wrong' and ordered the couple back for trial. This has resulted in Sollecito launching a desperate $500,000 (£320,000) online appeal for donations to fund his retrial.
The computer studies graduate said he was hard up and needed the cash for 'legal expenses' but added he would donate anything raised above the target 'to a research foundation'.
In an appeal posted on his Facebook page, Sollecito wrote: 'Well Guys, the problem for me now is pretty though.
'I'm deeply concerned not just for the issue I'm facing and most of you already know about, but also because I don't have resources anymore to fight this injustice.
'I badly need to be able to hire experts, when needed, or pay my attorney fees, documents fees, and so on when the new appeal will start.
'I hope to not bother you, but I need your collaboration to face this ordeal. Otherwise I don't want to forced to give up just for financial reason.
'I hope you will understand. I'm just asking if you, buddies, know how to build up a non-profit raising funds foundation. Big Hugs, Raffaele Sollecito.'
Sollecito is thought to have been paid $1million (£650,000) for U.S. TV news interviews and an advance on his book Honour Bound: My Journey to Hell and Back with Amanda Knox, which was published last year.
However a sizeable proportion of that was swallowed up in legal fees to his team of lawyers including Italy's high flying Giulia Bongiorno who is said to have the highest fees in the country.
On his Facebook page he invites potential donors to help him out via a page called Gofundme.com, and on it he adds: 'This new trial will take other (sic) six or seven years more with witnesses, transfers, documents, experts and everything will be discussed all over again.
Crime scene: This is the flat in Perugia where Meredith Kercher was found dead
His urologist father Francesco Sollecito said: 'This is an initiative of Raffaele's but it has my full support. I'm no longer in a position to fund a trial which could last another two years.
'They
never once stopped chatting. It's astonishing they are allowed to even
talk to each other, let along see one another, considering they are both
suspects in a murder trial'
'Witnesses will have to be reheard
and there is a good chance that new forensic tests will have to be
carried out and as such experts and consultants will have to be paid.
Witness
'We are both very grateful for the high attention that has been paid to this case by his lawyers Giulia Bongiorno and Luca Maori.'
As of yesterday, 54 people had donated with the largest amount being $1,000 from an anonymous donor and the total standing at more than $4,500. At that pace he will have made his target by the time the trial starts.
The Supreme Court on Tuesday said the ruling was full of 'deficiencies, contradictions and illogical' conclusions and ordered the new appeals court to look at all the evidence to determine whether Knox helped kill the teenager.
Close: Amanda Knox and Raffaele Sollecito are pictured outside the rented house shortly after Miss Kercher was found dead
On Tuesday, the High Court issued its written reasoning for doing so. Miss Kercher's body was found in November 2007 in her bedroom of the house she shared with Knox in Perugia, a central Italian town popular with foreign exchange students.
Knox, now 25, and her Italian ex-boyfriend, Raffaele Sollecito, 29, were initially convicted and sentenced to long prison terms, but a Perugia appeals court acquitted them in 2011, criticising virtually the entire case mounted by prosecutors.
The appellate court noted that the murder weapon was never found, said that DNA tests were faulty and that prosecutors provided no murder motive.
A young man from Ivory Coast, Rudy Guede, was convicted of the slaying in a separate proceeding and is serving a 16-year sentence.
In the 74-page Cassation ruling, the High Court judges said they 'had to recognize that he (Guede) was not the sole author' of the crime, Italian news agency LaPresse reported. The judges though said he was the 'main protagonist'.
Decision: Italy's judges have ruled that the
possibility that Meredith Kercher died during a sex game which went
wrong needed to be looked at again