[经济金融] How to talk to sons

Hi I'm Gina.
; s0 ]. Q  C/ a& hwww.csuchen.deI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago.
& S/ m% h) o0 s( u' r$ n- Z人在德国 社区I have a question, maybe some of you can help me? 3 [1 d0 g% l8 v3 V
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?
6 c# {& d9 I; SIt really bothers me because i've found adult magazine in their room today. 3 @7 n6 }( g9 a+ x4 h
Should I talk to them by miself or ask my brother to do it?
: L' o! n0 R# x* a& y人在德国 社区
' U. Y5 ?0 Y- K& c# ~1 m7 WHope someone had the same problem and can advise me anything.
/ T2 A0 G% i, P' a  U$ u: DBy the way, here is the photo of my sons:
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Happy mother of two great sons...