Question on getting Domain name---using someone elses payment

Im about to purchase a domain name but I don't have a VISA/MC and now just waiting for Paypal to get approved.

I wonder if the domain name is registered on my name say at go daddy, with my sign in name, if its ok that my girlfriend can use her paypal. I think it should be ok, because when the domain expires in a year, I can repay with my own payment (when my Paypal is approved or when I can get a VISA/MC card)

Much thanks.