OK, your problem is simple.

YOU SPENT TOO MUCH TIME TALKING TO HER AT THE BEGINNING.

As a rule of thumb, when you first meet a girl, DON'T
talk to her more than once or twice a week, and don't
SEE her more than once or twice a week.

If you're chatting online, don't chat more than a couple
of times a week.

And DON'T talk for hours and hours and hours in ANY of
these situations!

Why not?

Because when you talk for hours, you start talking about
all kinds of WUSSY things.

Do yourself a favor next time...

After a woman comes over to your house and gets physical
with you, LEAN BACK.

Don't call the next day and talk hot and heavy. Give it
some time and space.

Here's one of my favorite quotes:

"Give her the gift of missing you."

I love that quote.

I wrote it.

OK, I think you get the point. Stop acting like a needy
WUSS BOY, and start leaning back, being unpredictable,
and GIVE HER THE GIFT OF MISSING YOU when you're in a
similar situation in the future.