This can't be love

One of my favourite jazz standard is "This Can't Be Love", originally sung by Natalie Cole.

But my first contact with this song is hearing Diana Krall singing in a really chill yet upbeat way.

This can't be love, because I feel so well
No sobs, no sorrows, no sighs.

This cant be love, I get no dizzy spells
My head is not in the skies.

My heart does not stand still, just hear it beat.
This is too sweet to be love.

This can't be love, because I feel so well,
But still I love to look in your eyes.

I just thought it's really interesting how the lyricist classifies love using negative behaviours. Instead of singing "this is love because I feel so ______", it examines his/her own physical reactions to someone and then concludes that if there are no such physical sensations, then it is not Love.

But does it really hold true? I'm still trying to find out.