There isn't an 8th, to be truthful. The seven sins are represented by each devil from hell. You're confusing desire for lust.
Lust, Envy, Gluttony, Sloth, Pride, Greed, and Wrath. Those are the seven sins represented by seven different devils. ._.
There really isn't. You can't just 'introduce' a new sin to the world because you think it's needed. You're confusing desire with lust.
The 8th is rela but someone say theres a 9th. I call bs on that one but I googled the 8th deadly sin. Its mulvy or desire somethin like that lol
I have to agree with Chloe. Either there were always 8, or there wasn't. If its something like the bible which was supposed to be written a llllloooonngg time ago, you can't just add something to it. And honestly, from the articles I just read, it doesn't seem like there is an 8th. .-.
Leviathan (Envy), Lucifer (Pride), Beezlebub (Gluttony), Mammom (Greed), Amon (Wrath), Belphegor (Sloth), and Asmodeus (Lust). Those are the devils of hell.