[greglindahl]

The overwhelming majority of waltzes are notated in 3/4 with the measures in pairs, because it takes 2 measures (6 dance steps) to do one rotation of a rotary waltz. The two downbeats are equal. The music video on YouTube of Seal performing this song has equal downbeats.

If you write it in 6/8 instead, many musicians will emphasize 4 less than 1.

I think that dancers knowing music and musicians knowing dance is extremely useful. It changes your opinions about notation.

[roywiggins]

It certainly has the feel of a waltz. It's not that hard to make a 6/8 time signature not sound like a waltz (as you say, just hide the second down beat, or move it). But it's very very easy to waltz to the song.

Whether it makes more sense to musicians write it 6/8 or not, I have no idea, but it's still a waltz.