Man and his fiancee

John was talking to his fiance, Rebecca, and he said,
"Be honest, now, baby. How am I as a lover?"  
To which she replied, "Honey, I would definitely say that you're warm."  
"Really?" he said excitedly.
"Yes, in fact I would say that you're the dictionary definition of the word 'warm'."  
John was pleased until he went home and, just for fun, checked his dictionary and found, "WARM: Not so hot."