I'm a social worker who has dealt with countless cases of a child being abused or exposed to domestic abuse by a step parent.
I've had to support parents after they've had Claire's Law or Sarah's Law disclosures which reveal previous history of abuse.
I've had to take children to child protection medicals when they have been hit.
I've had to tell a parent that if they continue the relationship that places their child at significant risk of harm or death, we will need to go to court to ask for removal of the children. It's heartbreaking but they had to want to leave before we could help them and they didn't.
I worked with a parent who was with a 'nice' guy who it turned out was a drug dealer and kept coke and pills in her house and had people after him. He also had a conviction for a violent crime unrelated to his dealing.
Lots of these parents had no idea what these men were like, they didn't know them well and almost all of them had introduced early and moved in together quickly.
Lots of reasons they did this but obviously the challenge of dating as a single parent is a big one.
Whatever the reason, the result is the same. Strange men living with children they are not related to is a big risk and hard as it is, that means holding back and taking it slowly.
Waiting longer doesn't eliminate all risk but you have the chance to really get to know someone. How do they deal with stress? Are they a problem solver, do they have a temper, are they jealous or controlling, is there any sexual weirdness.
Have you met their friends, their family, how do they talk about their exes.
All of that takes months and months and longer if you're spending limited time together.