(a) I dreamt about you last night when I was asleep.
(b) I dreamt of you last night when I was asleep.
Instead of “about’ can we use “of” when we are asleep?
Not in vain am I asking this question: In “Practical English Usage” by M.Swan
the following is given:
dream about/of (while asleep)
What does it mean if you dream about/of mountains?
I have not seen this grammar point anywhere so far but “Practical English Usage”.
I need YOUR help….