I moved to LA only a few months ago and recently started seeing someone (a real foodie) who's coming down from San Francisco to visit me for the weekend. I wanted to impress him by taking him out to a great gourmet meal -- but it's already Wednesday night and I still haven't made reservations, so it has to be a place that is likely to still have space for two for a late dinner on Saturday.
Location doesn't matter so much. Price is also not a huge concern if the food is fabulous. A well-lit, romantic vibe would be great.
One thing: he's a pesco-vegetarian, so a menu that has a couple good non-meat dishes would be preferable. But some non-veg options for me would be great, too. I think we're both particularly fond of Italian, and a place with a superb foie is always a good indication of an overall strong menu.