love up vs sleep with

love up

verb
  • To make love to. 

  • To demonstrate affection for; treat in a loving way. 

  • To demonstrate affection (on somebody). 

  • To accept; to love wholeheartedly. 

sleep with

verb
  • To have sexual intercourse with. 

  • To share a bed or bedroom with. 

How often have the words love up and sleep with occurred in a corpus of books? (source: Google Ngram Viewer )