
i think he is so loving towards victor cause it was his soft nature to begin with, i think victor is the main center because the heart remembered him and his kindness but i doubt the original head ever loved him. based on what we see he had victor as more of admired and someone who funded his whims. which heart may be undirectly knowing of so he overcompensates with his natural gentleness / softness towards victor.
+ he noticed victors "love" (downright obsession) and he probably thinks victor is not a freak like all of em except heart, he seems to have rose colored glasses on about victors affection