Just to help you how some of the Sins are. Now you get how Meliodas is a Prevert XD.

Meliodas: open
Ban: open
King: open
Diane: open
Gowther: open
Merlin: open
Escanor: open
Elizabeth: taken by me X3
Hawk: open

Please ask first, and if you haven't watched the anime please do it's really good!