[经济金融] How to talk to sons

Hi I'm Gina.
# o4 ^# @3 T9 m8 O# kI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. , |6 Q2 C& e# z8 Z$ I+ p
I have a question, maybe some of you can help me?
4 r  b1 K; v1 g  s3 s$ iAt 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? 2 ?/ j; m% Q/ u5 w2 A
It really bothers me because i've found adult magazine in their room today. ; z* {% x- a1 P3 k: W7 k- D
Should I talk to them by miself or ask my brother to do it?
5 |/ `! Y7 y1 q3 E人在德国 社区 人在德国 社区, f( o2 h) m* B0 |, }
Hope someone had the same problem and can advise me anything.
, f& v( v* j2 k4 [( k& f0 g5.35.249.64By the way, here is the photo of my sons:   y6 W, J4 }, x5 s" S9 Q1 N8 Z
Happy mother of two great sons...