Smouldering. You seem to have passions ready to flame or to erupt - like a glowing ember which when fanned can flare into a fire of desire.
Sexual. You seem to act more "sexy" when in flirt mode, and may exude an enticing "animal magnetism" that subtly seduces the one you desire.
Mesmerizing. A look in your eyes can mesmerize. The object of your attention is drawn in by the mystery behind the eyes. One could lose oneself in their depths. You might be told you possess "bedroom eyes".
Probing. You seem to stare into one's soul, to sense one's secrets. You tend to make the object of your attentions feel vulnerable somehow. You may ask probing questions about things other people would not venture to inquire about. Being the instigator of a Scorpio inquisition indicates some serious interest in the guy or gal being grilled.
Powerful. You seem strong - a sorceror, a saviour ...or a slave master. A subtle sense of hidden power could attract a certain someone like a flame attracts certain flying insects.