it all depend. the two party can make a decision, to what extend, open or cloz, they decide, but for trust and maturity, i think 2 be open is better, but for the physical kongi and unfrustworthy minded one's. let it be secret or cloz as u said
4 me its not really bad for children below the ages of infantry. ,but gowned and mature children its going 2 cost u a lot if u understand what i mean. on the part of the parent, they should not encourage it by polling off before the sight of there kinds. bcos more will be learn t from there for further projection. both parties should keep away, especially opposite sex