When sending appointment it automatically shows as accepted in my calendar

[bbw82]

Outlook 2003 when setting up an appointment or meeting in my calendar it will automatically show that a person has accepted the meeting when I know they have not and when I check their email and calendar it does not show up on their calendar and there are still the options to accept, decline, ect.. in the email that was sent to them.

This seems to happen only when sending to one specific person. I have sent meetings from other computers and users and this does not happen except for this one particular person and only to this one contact.