Some how I always fantasize about a strong dominant man giving me a hair cut. I keep dreaming this. What could be the reason

This may be allegorical - a man is fascinated by your long hair, a symbol of femininity - but then, because he wants no other to enjoy it, he cuts it off.

(Forward story) Then the source of fascination for him is gone - and so is he.

If you want more from a man than a haircut, watch out for this guy.