DS aged 6 goes to his dad's for 1-2 night per week.
His dad has a housemate, a man, who I have known since I was a child so I am fine with this.
When I picked DS up this evening he randomly mentioned that a new man has moved in with them. I don't know this man, I asked who he is and he shrugged and said "dunno, he's my friends's mate, he's a professional chef".
AIBU to be really uncomfortable with this?