When I was a single mom and dating I never brought any guy around my kids until I knew them pretty well, then I would invite them over for dinner. There’s too many nuts out there.
One reason I married my now-ex (that sounds dumb, LOL!) in the first place was that he dated me (who is AWESOME in every way, LOL!) for 6 months before he let me meet his son and the two nephews I would possibly be taking on to raise.
Of course, my ex turned out to be a bad investment for ME, but at least those kids got raised properly; totally God’s hand in it!
And even though I sometimes WANTED to strangle them when they were bratty teens, I never did. :)