That's not reasoning: it's rationalization.
However, this ex-husband sounds like a real dope, "all little kids look alike" ... he's "impregnated" women before (where are those children? sucked down sinks, or is he supporting them too?) so I don't have much sympathy for him.
Huh? You're a woman, aren't you?
"You're a woman, aren't you?"
Yeah, I am. You gotta problem with that?