I've lived on a small commune on a farm for several years with my DC. My youngest is at the local primary where he has some good friends and I'm friendly with some of the parents, particularly one mum who I'm quite close to. She has visited us often and I've looked after her DC a few times, we've been out for drinks together etc.
Her DP of about 3 years moved in with her recently. His DC stay regularly but aren't at the same school. I've met him in passing a few times and found him ok but fairly uninterested in me which is fine.
It's my birthday next week and I'm having some people round in the evening for a barbecue and drinks. The people I live with will obviously also be there as will all the children who live here.
My friends DP has told her he "won't stop her going" but that he isn't coming, his DC aren't allowed to visit my home, and he disapproves of her bringing her DC round here 
This because he has heard that it's a commune, has decided it's therefore full of unemployed drunks and weed smokers (this is patently untrue, plus I happen to know he takes coke at weekends so wtf with the judgemental crap anyway?) and not a suitable place for children to visit.
The only person he's ever met who lives here... is me
WTF?