Cats do that. People tend to give cats less credit in the emotional department than they deserve. My cat is basically attatched to me at all times to the extent that when I go to work she sits by the front door until I come home and if I go on holiday I can't even sit down when I come back or she will be on my lap in seconds. (with claws dug in even when I try to stand up...)
Edit: Forgot to say, my cat is a house cat, she refuses to go outside.
