Looking on the internet deeply has found these results:

who I have been dreaming of is the most popular phrase on the web.

whom I have been dreaming of 15 results on the web	who I have been dreaming of 1236,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
I have been dreaming of payback, for the two of you taking away years of my life. I have been dreaming about saying that for years. I have been dreaming about this merger all week long. All that time, I have been dreaming of a life without this. I have been dreaming of coming to n.y.u. It is the day I have been dreaming of, and I have nothing. I have been dreaming about this moment for months. I have been dreaming of this day, of seeing you again.	All that time, I have been dreaming of a life without this. I have been dreaming about this merger all week long. I have been dreaming of this day, of seeing you again. I have been dreaming of payback, for the two of you taking away years of my life. I have been dreaming of coming to n.y.u. I have been dreaming about saying that for years. It is the day I have been dreaming of, and I have nothing. I have been dreaming about this moment for months.

whom I have been dreaming of

15 results on the web

who I have been dreaming of

1236,000 results on the web

More popular!

I have been dreaming of payback, for the two of you taking away years of my life.
I have been dreaming about saying that for years.
I have been dreaming about this merger all week long.
All that time, I have been dreaming of a life without this.
I have been dreaming of coming to n.y.u.
It is the day I have been dreaming of, and I have nothing.
I have been dreaming about this moment for months.
I have been dreaming of this day, of seeing you again.

All that time, I have been dreaming of a life without this.
I have been dreaming about this merger all week long.
I have been dreaming of this day, of seeing you again.
I have been dreaming of payback, for the two of you taking away years of my life.
I have been dreaming of coming to n.y.u.
I have been dreaming about saying that for years.
It is the day I have been dreaming of, and I have nothing.
I have been dreaming about this moment for months.