- God knows that I would follow you if that is what you wanted.
This is a quote from a song called "God knows" (from an anime, The Melancholy of Haruhi Suzumiya).
Why is "would" is used here though "is" is used in the if-clause.
I learnt at school that you use "would" in the main clause and the past tense in the if-clause when you refer to something not true. So, according to what I learnt, it should be
- "I would follow you if that was what you want"
or
- "I will follow you if that is what you want".
