i could n't send him what i had always used on dominic because ... well , that would be just disgusting ... but almost instantly , i knew to send him serenity , and i pushed with that , confused at how easy it was , but his blood overtook those spiraling thoughts and i drank my fill of his very powerful tasting , bubbly blood , but stopped before his heart rate slowed so he would n't be disoriented as he had asked .