'that' is a couple of different things stated in the lyrics.
"But I'll never do it better than I do it with you
So long, so long
And I would do anything for love
Oh, I would do anything for love
I would do anything for love but I won't do that
I won't do that"
Here that is 'but I'll never do it better than I do it with you.'
"After a while you'll forget everything
It was a brief interlude and a midsummer night's fling
And you'll see that it's time to move on
No, I won't do that
I won't do that"
And here it's forgetting everything and moving on.
What a baffling comment. Driving at a slower speed would give the person behind you more time to react, which they need because they're riding your ass regardless of your speed.
I've also done this to quit vaping. I've quit cold turkey a couple times, but diluting like this was by far easier for me. Still difficult, especially when going to zero nic, but it worked.
'that' is a couple of different things stated in the lyrics.
"But I'll never do it better than I do it with you So long, so long And I would do anything for love Oh, I would do anything for love I would do anything for love but I won't do that I won't do that"
Here that is 'but I'll never do it better than I do it with you.'
"After a while you'll forget everything It was a brief interlude and a midsummer night's fling And you'll see that it's time to move on No, I won't do that I won't do that"
And here it's forgetting everything and moving on.