"Cody" oriental shorthairs???

has anyone else experienced a severly co-dependant oreintal shorthair???? my male just can't get enough attention, when u pet him he seems frantic for more, by the time u reach his tail he has whipped around and bopped u with his head for more. he follows me around screaming at me. he hasto be with me 24/7. hes such a sweetie! and is such a lovely cat. i'm just wondering if this is a breed thing, the constant need for attention, or if it is because he is a rescue and had a bad start in life. he has to sleep right beside me on the pillow and have both my arms around him at night. and he will come up to me when i'm sleeping and put his face in mine and let out the loudest oreintal scream he can muster ( you all know the voice LOL) and when i'm on the computer he literally hangs off my arms to get my attention. he is VERY insecure. and we are dealing with urinary behaviour because of it, but we are getting that under control, how can i make him more secure.