Sergio Aguero believes he and Lionel Messi are 'like an old married couple' when they are on Argentina duty together.
The Barcelona star made his debut for his country in 2005, a year before the Manchester City striker would join the Argentina senior set-up.
The duo have played together at three World Cups, four Copa Americas as well as winning gold at the 2008 Beijing Olympics.
The period of time they have spent together as a result has brought them closer together, but Aguero has insisted there are negatives to sharing a room with Messi.