[经济金融] How to talk to sons

Hi I'm Gina.
" V& S% B9 n( @2 TI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. . U: v, t' g7 }+ [9 h  \4 w. H" s
I have a question, maybe some of you can help me?
3 z- A& t3 p7 b% A" I4 ?4 Z人在德国 社区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?
: {  b% C8 ^- l' s5.35.249.64It really bothers me because i've found adult magazine in their room today. 5.35.249.647 M1 Z" E7 ]$ f" c- y1 o
Should I talk to them by miself or ask my brother to do it?
2 q4 e/ H) w9 J* K5.35.249.64 - I6 [) C) T( e  N; U
Hope someone had the same problem and can advise me anything.
5 Y* h7 T& p' _1 _0 {# u) b" ^* FBy the way, here is the photo of my sons:
! U0 g1 @0 e3 v. h  Z人在德国 社区
Happy mother of two great sons...