When is moving fast a red flag?

[corporate_sellout]

No
Those are all positive signs. That's high interest level right there.
You're in complete control of the situation.
A girl spending the night at your place is a lot different than you spending the night at her place.
Your place = Your frame
It is up to you to allow her to enter your world.

Is the sex good?
Are your attracted to her physically?
Do you enjoy having conversations with her?

If you answered yes to all above, then congratulations my friend!
That's good chemistry!

'that's good chemistry'. that is a very optimistic conclusion. and those questions have to be answered by her not the guy..

 

[Tilex]

'that's good chemistry'. that is a very optimistic conclusion. and those questions have to be answered by her not the guy..

Yeah, whatever.
Just give all your power away while your at it.