Original post here.  Sourced on tumblr to gregorysshocktheater via erotiterrorist.  Illustration contains the text “The love that dare not speak it’s [sic] name.  Forbidden Thrills from Beyond.   She was a virgin sacrifice.  He was a Cthulhu.  Theirs was a love like no other.” This is an illustration The Genre Experiments of H.P. Lovecraft by allistermac as part of a number of illustrations found here.