[经济金融] How to talk to sons

Hi I'm Gina.
; x5 O6 R/ Q8 P/ ZI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago.
/ l$ \0 e3 u7 ]. Z  v/ c' |- R/ vI have a question, maybe some of you can help me?
3 U0 l8 ]: o6 U; z0 B' s6 oAt what age should a parent teach their son about ‘sex’ if there is no father around or would it be better for the kid to have a male family member to do this?
) j6 r2 A9 ]6 P6 i6 q3 u" KIt really bothers me because i've found adult magazine in their room today.
* M. l9 j0 U0 t% \Should I talk to them by miself or ask my brother to do it?
6 n8 |4 P7 h5 _" d+ U9 ?人在德国 社区
% P2 M. u+ v" m! }5 w$ }; H" e& zHope someone had the same problem and can advise me anything.
1 m9 R& H( i. B; PBy the way, here is the photo of my sons: 8 \1 s" V' ?# q, ]$ i6 u
Happy mother of two great sons...