This is a hard one because of how weird your relationship is. If your wife was the typical WAW I'd say don't do anything, but since she's not typical, I'd do something. Maybe not over the top, but certainly flowers at the least.
bhopeful, since your wife is now expressing her love for you (unless that's changed), I'd also suggest that you do something, even if you previously didn't. You can't go all LRT on her.
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt
