Hugely inappropriate and irresponsible I agree op.
I raised dd as a single parent since she was 2, I didn't have loads of money for sitters etc so until she was at nursery and then school I didn't date.
Then I dated during the day when she was at nursery/school, lunch, coffee etc until such a point as the relationship was looking promising and then I was happy to pay for occasional sitters for eve dates.
Any decent person would not agree to a date where children are brought along!
I've had men push for me to pay for sitters or even "I'll come over when she's in bed and leave before morning" er no!
Served as an excellent filter actually as it meant I knew they weren't right for me.
On here and other forums I'm on I am shocked at the parents who do this, who introduce a new boyfriend or girlfriend to their dc early on etc and yes I am critical when it arises on posts and I make no apology for that. I think it's poor parenting and shows poor judgment as a parent.
Endless threads on here by mothers who not only introduced but moved in the boyfriend WAY too soon and then they are surprised when there are issues between their new partner and the dc
Often they are advised to move the new partner out which they are frequently very resistant to doing - even when the partner is abusive to their dc!
And of course in the news all too often kids abused and even murdered by new partners with alarming frequency!
I wish parents were more considerate of their dcs safety and emotional needs than their need to have sex! That is what it basically comes down to.
Dc should come first every time