I'm not single anymore, but when I did cook for the women; lasagna.
Lasagna goes good with lots of red wine as mentioned earlier, may be veggie or meat, plus salad and crunchy bread sticks make it fun for a nervous mouth.
Also it keeps in the oven, just in case she runs late, or if you get busy cooking something else (like her) before dinner.
If you get stood up, leftovers are still tasty.