Dating by cruising in Hangang River ? why not ? you can enjoy a romantic scene of Hangang with Seoul city night view as the background by cruising the river. Choose an evening cruise from Yeouido to Ttukseom for 70 minutes cruise. Don’t forget to take a place on the top floor because you can see the best view from there.
Other tips : bring your camera, this is the best time to take some panorama pictures isn’t it ? ^^