DS being tricked into watching porn

[Lemonyknickers]

I have 3 kids. Middle DS is 10, quite a childish 10. He has been quiet at school the last few weeks and I put it down to end of term tiredness. However last night he had put a letter on my pillow (we sometimes do this if he has something he wants to talk to me about but feels embarrassed). It was heartbreaking.
Turns out a boy at school has been describing porn to him despite him saying he doesn't want to know. Then this boy gave him a site link, apparently it was a Roblox game site, DS typed it in and.... It was porn. DS says he can't get the images out of his head and he feels ashamed.

I've told him not to feel ashamed it wasn't deliberate, that I can't get the images out of his head but they will fade. But I don't know what to do about this other boy.
A. Do I pleasantly and politely just say to this lad not to talk porn to my son and hope the crippling embarrassment of a mum mentioning it does the job
B. Tell the school
C. Tell the boys mum
Or all 3, though boys mum is not someone I find approachable.

[madeyemoodysmum]

The kids was ten and it has upset him

He is too young to be exposed to that. What’s not to understand.

Anyway weird opening the tread again so see ya.

[picklemepopcorn]

Try reading the post, Lol. Child was upset before the mum ever knew.

[FishCanFly]

Tell the Mum! And tell the school!