Your friend tells you they're a paedophile

[Thumpalumpacus]

1) Do you keep it confidential?

c) No, tell a select few but ask them to be sympathetic

... if they have children with whom the pedophile has contact, I'd feel awful if I learnt later that their child was molested and I did nothing. So I'd say something, in order to alert them, but ask them to not get all aggro, simply be wise and take precautions.

2) Will you still be their friend?

b) Yes, but distance yourself

I'd be civil, but avoid deeper personal conversations.

3) If yes to the above, will it change the contact you allow with your children?

b) Yes, only supervised contact

Absolutely.

4) Will you support them?

a) No, don't want to hear anything about it
b) Yes, as long as they keep it vague
c) Yes, let them say whatever they need to

I'd support them seeking what help is available. But letting them say what they will ... I dunno. I sure wouldn't want to hear how they might have fantasized about children, particularly my own. So limited support, I suppose.