Your calmness;he loves how when he's on the verge of breaking and not being able to control himself you come to his rescue and calm him down:
Aries,Cancer,Leo,Libra,Pieces.
Your nurturing;he loves how when he has flashbacks of the bad things in his past your always there to tell him everything okay and that your there for him:
Taurus,Capricorn,Aquarius.
Your whispering;yeah sure its kinda weird that he likes your whispering but it always soothes him when you whisper that everything will be okay to him and rub his head:
Gemini,Virgo,Sagittarius,Scorpio.