Orion wouldn't realize any of that, because he's illogical for the most part.
I meant completely outright verbal "My princess, will you go out with me?", or something of the sort, not implied. And I wish that there was just a funny little epilogue in the book with Orion's hopelessly naive proposal and Holly's reaction (involving either a Neutrino or Orion's solar plexus).
I cannot imagine that scene. It would be so damned funny