asiate, megu, or morimoto?
Asiate is by far the most romantic of the three, so I would avoid that if you don't want to convey the wrong impression (despite excellent food). I personally prefer the food at Morimoto and think the prices are more in line with the quality than at Megu. Ambiance is very different, with Morimoto being sleek and modern and Megu being more imperial in nature, so it depends what you prefer. My overall vote is Morimoto.