The Argentina goalkeeper believes his side is fortunate to have a player of the forward's quality among its ranks and hopes he continues to make an impact at the World Cup.
The Barcelona star has now scored four goals in Brazil ahead of the Albiceleste's last-16 clash with Switzerland on Tuesday, one short of Diego Maradona's tally in 1986, and is now just 14 short of Gabriel Batistuta's all-time national record of 56.
And Romero is hopeful that Messi can continue his group stage form in the knockout rounds after scoring winning goals against both Bosnia-Herzegovina and Iran so far.
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"As I said last time, Leo has returned to rub the lamp," the 27-year-old was quoted by AS. "He always does something different - we are lucky to have him. It's hard to find words to define Leo's awesomeness. He makes us all very happy to have him at this level and as a team he will help you to keep playing this way."
Messi scored all but two of Argentina's six goals as it topped Group F and defender Federico Fernandez echoed Romero's words on the importance he has in Alejandro Sabella's side, particularly now Sergio Aguero has suffered a muscle tear.
"Messi is an absolute star," the Napoli center back said. "He's just a different player. I enjoy seeing him play. Thank goodness I don't have to mark him."