[经济金融] How to talk to sons

Hi I'm Gina.
+ D2 \+ ]! Q; a& |人在德国 社区I'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. $ a: m/ x# x0 S0 C& X8 h
I have a question, maybe some of you can help me? rs238848.rs.hosteurope.de! }2 D* s4 J$ J* E9 h3 M
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+ E: V( M( g1 n" d
It really bothers me because i've found adult magazine in their room today. # G+ Y5 s/ T! {& [
Should I talk to them by miself or ask my brother to do it?
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( s$ {* @( ^/ d% A3 FHope someone had the same problem and can advise me anything. 人在德国 社区1 k# v; f0 \0 S; l: a% c; n
By the way, here is the photo of my sons: 人在德国 社区7 o, M+ z+ C. M* s; I  Q
Happy mother of two great sons...