The centre-back played alongside the Portuguese during their time together at Manchester United and he has only good memories of the Ballon d'Or holder
The Portugal international is often criticised for his perceived arrogance, yet Pique is adamant that the prolific forward is a friendly guy off the pitch.
The pair were team-mates at Manchester United between 2004 and 2008 and the Spain international centre-back has nothing but good words for the Madrid star.
"He may very well have been sincere when he said that people are jealous of him because he's handsome, rich and a great player. He will have had his reasons," Pique was quoted as saying by Marca.
"I know him very well and he is a friendly guy. His public image does not correspond with how he is in real life."
Pique left United for Barcelona in the summer of 2008, with Ronaldo saying farewell to Old Trafford for Madrid one year later, yet the duo have maintained a good relationship ever since their time together at the Premier League champions - despite the rivalry between their current clubs.