[经济金融] How to talk to sons

Hi I'm Gina. $ q( ^* r  P- J2 r; c1 S
I'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. rs238848.rs.hosteurope.de/ a2 @) @( p3 b. n
I have a question, maybe some of you can help me? rs238848.rs.hosteurope.de3 d) P8 O2 B7 f; t* p# m8 G7 U
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? - r2 U# a$ R; @. L; j
It really bothers me because i've found adult magazine in their room today.
, n/ M  d  q, j  I& tShould I talk to them by miself or ask my brother to do it?
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% R, ~4 l9 `8 U8 y* m  b1 B  CHope someone had the same problem and can advise me anything.
4 ^" i* v: ]4 H7 ?. r; bBy the way, here is the photo of my sons: ; F1 X1 d1 M, H' @6 H5 ]
Happy mother of two great sons...