[经济金融] How to talk to sons

Hi I'm Gina.
! X! h9 P, M: ^6 AI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago.
. ^0 H/ N" B& k1 }5 |1 ^- r7 y5 rrs238848.rs.hosteurope.deI have a question, maybe some of you can help me? 5 m# r& |4 `' _7 a' x
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? ; o7 p$ y8 S! Y  i+ U* i/ Y
It really bothers me because i've found adult magazine in their room today. 人在德国 社区5 w! ~9 d! x$ j1 C3 _
Should I talk to them by miself or ask my brother to do it? rs238848.rs.hosteurope.de& I" O) W+ S5 E1 ]4 J* G

8 n( p7 y4 W! ?Hope someone had the same problem and can advise me anything.
9 [8 i1 l1 E. I, Y. P4 lBy the way, here is the photo of my sons: 人在德国 社区9 Y: z( |5 ]5 V& H! V8 l
Happy mother of two great sons...