In his new book, 'Pepe: My Autobiograph', being serialised in the Mirror, Reina recalls: "The veins in our necks were bulging, our faces were red with anger and neither of us was going to back down.
"The row between me and Jamie Carragher started during the game - I can't even remember which one - carried on in the dressing room and didn't come to an end until we sent each other text messages apologising.
"He went crazy at me, screaming at me, and I was screaming back at him.
"We were like that for fully five minutes shouting at one another and getting our point across.
"The people who sit in the seats closest to the pitch probably could not believe what they were hearing.
"We were on the same team but we were arguing with each other with real passion and neither of us was willing to back down.
"They will have thought it was all over when we stopped, but as soon as we got back into the dressing room we started again and it was even rougher than it had been on the pitch.
"If anything, the screaming was even louder and all the other players were just totally silent, watching us giving each other hell.
"We are all passionate and we are all desperate to win so it is totally natural that there will be occasions when our emotions boil over and we take it out on one another."