Bobh, I hope the missus makes you extra special pieces every day for your lunch for that!
I don't know if you are into wine but there's a place called O Chateau
that do Wine Tasting Sessions. They take place in a cellar near the Louvre and it is really enjoyable and funny. You learn a lot about wine and champagne and all the tastings were delicious.
If you want to get the most amazing views over Paris then definitely go up the Montparnasse Tower - wow! You can have a meal or just coffee near the top and at night, it's stunning and I think the best place to watch the Eiffel Tower Light Show.
And predictably, there are lovely things in the Galeries Lafayettes!