Currently Being ModeratedFeb 9, 2013 11:59 PM (in response to white_alphonzo)
This is happening because you're syncing all devices with iCloud and you're using the same Apple ID for iCloud on all the devices. You need either use a different iCloud account on your phone to keep your contacts separate, or stop syncing your contacts with iCloud (not recommended since syncing contacts prevents loss).
On your phone:
Settings > iCloud > (scroll down) > Delete Accout > Keep contacts on phone > set up new iCloud account with different Apple ID
or to stop syncing:
Settings > iCloud > Contacts > OFF