Messi has received much flak for his failing to reproduce his phenomenal club form at international level but the three-time Ballon d'Or winner responded to his critics with his first international hat-trick in Argentina's 3-1 victory over Switzerland on Wednesday evening.
His partnership with Aguero looked dangerous and worked to open the scoring in the 20th minute when the Manchester City striker's cross was turned in by Messi.
Speaking after the match, Messi had praises for his partnership with Aguero.
"We [Aguero and Messi] get along great, both on and off the field," the he 24-year-old told Sport, "but the important thing is that the team is becoming a very good group. We have to get a group together to achieve important things.
On a personal level, though, Messi did concede that scoring his first treble for his country was extremely satisfying.
"[I'm] very happy because we won and because these three goals are special to me," he enthused.
"I have had a lot of games where I didn't manage to score any goals, but I knew they would come."
The hat-trick brings his tally for his country to 22 goals in 67 appearances.