My dc 16 has just told me that my dc 18 (who has a 25yo dp) last night asked them if they'd join in a 3some!!!!! It was a serious ask apparently. Dc 16 said 'no way' & is very disturbed. This happened while I was next door having a chat with a neighbour. WTAF?????? My head is screaming. Obvs words are needed. Help me.