He hurts my breasts, newly wed couple and we are on our honey moon trip plz advice me how tel me this one ?

me a newly wed lady , my hubby is very good on bed but he hurts my breast like squeezing , biting,sucking , slapping them , wll i to enjoy it to certain level but he goes beyond that level. some he is so crazy about my breast , he pours some luke worm tea or milk on my breast and he sucks those liquids . plz tel me how to tel him that plz do it in a limt.