Mike Brown happily admitted his delight at defeating Wales after England's win at Twickenham on Saturday.
England were left clinging on for a 25-21 win despite dominating the majority of the match, leading 25-7 going into the final ten minutes.
Brown added that the victory was especially satisfying because of the quality of the opposition.
"It's always good beating the Welsh, our bitter rivals," he told England Rugby TV.
"I thought it was happening all over again, that World Cup nightmare but the boys stuck in there which was great. We were quite nervous in that last ten, the nightmares were creeping in again.
"We know with Wales that if we knock off and stop playing, like we did there, they will come straight back into it.
"They are a team full of British and Irish Lions and world class players so we will learn from that like we always do and move on."
Brown added that the priority was now on producing an 80-minute performance rather than thinking about the Grand Slam this week, ahead of a potentially historic feat next Saturday.
"We are going to savour these moments, Triple Crowns do not come round that often so we will enjoy it and then move onto next week," he added.
"We will not be talking about it (the Grand Slam) too much, we want to continue working on our full 80 performance, they are tough side who turned us over two years ago.
"We showed today what we can do for about 60 minutes, if we can get that for 80 then I will be happy. Our attack, especially in the first half, really started to click and we could have put another couple of tries I think.
"Our kicking game was good, counter attack was good which is great for me to get into the game.
"It's always sweet beating the Welsh, that's all I can say really, I love it."