DD is only just 5. She sees her father every other weekend. He has a girlfriend who has a ten year old brother who often sleeps over when DD is there. Her father bought a bunk bed for her room with a double bed on the bottom, which she says they usually share. There is another spare room in the house so no need for them to share rooms let alone beds IMO. She spoke about his 'bits pointing up' when he woke last week and I feel very uncomfortable about them sharing a bed/room. AIBU?