[经济金融] How to talk to sons

Hi I'm Gina. % y& O  e) r3 K% R; B5 S
I'm mother of two wonderful 10 years sons. Their father has left us 8 years ago.
4 c) ~/ z- p$ m2 c+ iI have a question, maybe some of you can help me?
, J! @: }( I) l; S8 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? 5 i  w2 ]- X0 o; R& M4 S
It really bothers me because i've found adult magazine in their room today. 8 g: P/ q2 h- r, `7 ?8 [
Should I talk to them by miself or ask my brother to do it? csuchen.de( a  l. a% `$ ~: x

6 U. H, K% p& ocsuchen.deHope someone had the same problem and can advise me anything. $ _: H' g: Q1 n8 q3 G$ |
By the way, here is the photo of my sons: 2 r, y0 m3 Z1 c2 `& L9 C
Happy mother of two great sons...