[经济金融] How to talk to sons

Hi I'm Gina.
" Y0 J+ X  p$ OI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. & T0 r5 \; ?" B/ p# E) A5 p
I have a question, maybe some of you can help me? 2 P) V" Z$ P5 h$ p" N
At 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? rs238848.rs.hosteurope.de! ]- C# R1 O7 B4 |( U/ x) Y! b
It really bothers me because i've found adult magazine in their room today. rs238848.rs.hosteurope.de+ z& k" j7 \' |: X8 ~4 L+ a# j0 M
Should I talk to them by miself or ask my brother to do it? 人在德国 社区7 U- O8 I2 Q' k2 d0 B! H& k

8 m* E3 e0 N  j+ J, _Hope someone had the same problem and can advise me anything.
$ w8 ^# p- j" D7 t* ?2 DBy the way, here is the photo of my sons: , W; F# S1 t- V0 ]* M7 Y$ @, \) Q
Happy mother of two great sons...