Might as well go for river walks. They were one of my favourite
dating iternary. Just walk/sit and talk.
I also think the stretch behind Esplanade is such a wonderful sight
in the evening. During weekdays, the CBD buildings shines brightly
and tall. And Fullerton Hotel and the Merlion is quite a
magnificent sight. The breeze from the river and sea also adds to
the peacefulness; the dim light is also perfect.