These things really makes me laugh, why on earth would you need these? What about sending yourself flowers first, or maybe the random lipstick-mark on collar for a starters… I would definitely recommend something less painful first.
Traces of an Imaginary Affair by Björn Franke is a set of nine tools which can be used to create bite marks, scratches and other signs of an imaginary affair. Why would anyone need such a thing, you might ask? Franke says he designed the tools after hearing about people who faked affairs to provoke jealous attention from their partners.