Snakes feel no emotion other than a keen survival instinct via the Cerebellum. The human cerebellum is one of the oldest parts of the brain and account for that quick reaction you feel when someone surprises you. Millions of years of evolution have allowed humans to evolve higher brain functions, such as the emotional centers that we call the amygdala. Emotion(s) served to motivate us to act, generally for survival purposes. The human cerebellum has a direct connection to the amygdala, and these disparate parts of the brain come together in humans to grant us the ability to rationalize our emotions. However, the snake/reptile brain only has a cerebellum. The cerebellum is so primitive that it is the part of the brain that stilulates what humans call "fear"; you see a fierce perdator coming at you, and you run. The cerebellum controls MOTOR FUNCTIONS, and this is why when you startle a ball python they curl up or do some other instinctive task.
We can debate all day if snakes experience love or not, but facts are facts, and the facts are NO.