There's only one time when it's good news to hear "call
me" from a man - and that's when he's already calling you
frequently. He's already actively pursuing you, and would
be thrilled to get a call from you. That's the way you
want it. And then, yes, DO call him. (Just not every 5
minutes!)
But it's very different when the relationship is just
starting out, OR when he is not the one pursuing you.
As you can imagine, when woman calls a new man daily or
even more often, instead of making her calls rare and
special occasions, her calls will be far less welcome and
are much more likely to come at a bad time or become an
annoyance.
Worse still, her constant calls virtually ensure that her
man is never going to spend time thinking about her.
A man must spend time thinking about you in order to fall
in love with you!
When a man casually says "call me," some women assume that
this means he intends to make a date, when he was just
ending your conversation. "Call me" can be the equivalent
of the not-too-sincere 'let's have lunch.'