No no, technically, if something is 'addictive', then it must also be addicting in an active sense.. However, you are correct that the proper usage above was the adjective. I admit that I am bored.
2 of the following 3 things are actually true. I admit that MadMax and SCK could be seen consorting last night in the same eatery in the whereabouts of Katy Texas. I also admit that I told a safety inspector to **** off today, which led to the immediate dismissal of my temporary employment. I also admit that I am currently in possession of 500 pounds of pure cocaine.