[经济金融] How to talk to sons

Hi I'm Gina. ; t% r  U' h' K4 B; H! W( N
I'm mother of two wonderful 10 years sons. Their father has left us 8 years ago.
+ O  G/ @8 r: G( o6 ?I have a question, maybe some of you can help me? 1 t: c( h  R4 R1 j  Q$ i
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? 人在德国 社区" f* G. O/ d) R! x/ J3 f) {# K& D" o2 [
It really bothers me because i've found adult magazine in their room today.
, ], ~; L1 N3 j. R" [0 ]Should I talk to them by miself or ask my brother to do it? 5 s+ M: m2 \: i0 ^& |$ w6 h
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Hope someone had the same problem and can advise me anything. 0 w8 o; e' `, v
By the way, here is the photo of my sons:
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Happy mother of two great sons...