Yes, I understand. How old were Snow and Aurora anyway? Snow was 16 or 14 I forgot? Aurora was 16. In that age when you are kind of living in a sheltered way, it's quite easy and understandable to fall for the first handsome stranger, and for him to feel the same way. Just imagine, not skarred by any experience, young, naive, the girls both Snow and Aurora were extremely beautiful modeled by the standards of beauty of the era, and not forget Aurora was kind of enchantingly beautiful, since the fairies blessed her with beauty, so yes, it's not weird for Phillip to fall for her too. Or to go with a simpler theory like yours, but truthful, it is possible in fairytales, and it's the most romantic type.