Maybe it's the very, very dark hair. Thick, dark hair. It makes me think of virility and strength.
Maybe it's the little flashes of grey at his temples. I read: Strength, coupled with maturity.
Maybe it is the natural pallor of his skin. It looks delicate, fragile, and yet also reassuringly lived-in.
Maybe it is the languid set, the limpid blue of his eyes, which seem to unexpectedly flash and reflect light at moments that truly, take my breath away.
So he already has a - for me - fatally attractive combination of colours. Add to that a dark green jacket and a blue-and-white-striped shirt, and I'm away with the fairies.
I suspect I am not alone.