Is it safe to fill out our Credit Card Number on the Internet?

What website is she asking you to supply your credit card details to?

Have you met this woman?

From the little you've written so far, it sounds like you're being scammed

 

Dude your being scammed. Please don't fill in your credit card information for a girl you just met online.

 

Definitely a scam.

 

Your being scammed...

 

Jesus fucking Christ dude. How naive can you get?

 

Stop right there!

Do not share you credit card number with anyone online.
Do not share the sort codes, account number or the security pin.

That person is trying to scam you and steal your money.

 

Right cancel your credit card right now.
And ask the bank for a new one.

 

Plus dude the "girl" is not a girl.
It's a dude scamming.

 

I wouldn't take the chance.
The bank may have prevented a transaction, but there's no telling how much data the site harvested when you put the details in.

Your safest option is to contact your bank, ask to deactivate the card you used on the fraudulent site and ask for a replacement.
Ask for a new PIN for the new card also.

Better to be safe than sorry.

 

Quickly! To be safe, you must give me your CCN so I can verify that it hasn't been used yet.

 

You probably should change your credit card number and cancel the old one. Selling credit card details on the black market is big business. You don't want to be a victim of identity theft. You really absolutely do not want this to happen. Losing money is the least of your problems.

Phone your bank right now and tell them you need to change your credit card number asap.

 

Yeah I advised the same.
It's not worth risking anything when it comes to bank cards.

 

Indeed. I hope you've phoned the bank in these last few hours.
Trust me don't let it slide.
The bank won't care how you were tricked into going to a scam site.
They only care about your money and their money (if it was credit card).
So don't be embarrassed to phone or anything.
Your bank card is in a way an extension to your life as well, scammers have been known to do identity fraud with bank card details.