[经济金融] How to talk to sons

Hi I'm Gina.
# w, F% ?. \, T8 VI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. / q5 ]3 x7 S. {
I have a question, maybe some of you can help me?
2 p$ P8 u0 i( g% O6 ?4 B2 bAt 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?
6 ]) x! f) B' v6 CIt really bothers me because i've found adult magazine in their room today. ! A9 z. f- [2 U2 V& \
Should I talk to them by miself or ask my brother to do it?
  s5 l# V" x  t* _! u8 i2 Q人在德国 社区 : V, Z$ j& U1 [0 ~) G5 \
Hope someone had the same problem and can advise me anything.
( \* J8 D- V- t8 x人在德国 社区By the way, here is the photo of my sons: 人在德国 社区* c# p3 n; A5 _$ r0 w& N
Happy mother of two great sons...