[经济金融] How to talk to sons

Hi I'm Gina.
# S* o( P! }/ @$ O  ~* \, x& dI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. 人在德国 社区: @  Q( N" x& ]1 j
I have a question, maybe some of you can help me? 5.35.249.644 }. H- N* U: {6 c; ]/ J9 K
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8 B. ~+ x( f/ c( h$ ]: C9 p' L
It really bothers me because i've found adult magazine in their room today. + g: F& i. c5 g: T3 j8 s$ _8 Y) }8 W
Should I talk to them by miself or ask my brother to do it?
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Hope someone had the same problem and can advise me anything.
! B2 o1 g+ x+ _2 p# ^# Y) mBy the way, here is the photo of my sons:
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Happy mother of two great sons...