Jeff Bezos clearly timed his big proposal to Lauren Sanchez to align with the maiden voyage of his spectacular superyacht and their grand arrival in the French Riviera ... because shortly after landing in Spain last week, he did the deed!!!
Sources with direct knowledge tell TMZ ... Jeff pulled out the 20-carat sparkler on dry land, somewhere in Spain ... we believe either Ibiza or Mallorca. We're told the proposal was private -- just the 2 of them -- and boy, did they keep a secret for a few days.