Even if snakes can't love could they not possibly rationalize a symbiotic relationship with instinct? For example the old saying "don't bite the hand that feeds you". By providing heat, security, food and not attacking them ourselves could our snakes possibly see us as co-habitators of the same area? Could they not see us an necessary to their survival and thus act in ways that we see as "loving" because they can see that WE like when they act that way (like a dog shaking for a treat...they don't want to shake)