Well now. Do you think there's anything problematic with this guy's behaviour? Like, just maybe he's being a bit dishonest at this point when he knows very well the two of them have different ideas as to where the relationship's going?
This bit also sounds very misogynist--he doesn't seem to care for her other than as a decent fuck, and he knows she's interested in more than fucking with him.
Assuming the rest of it happened as the writer said it did--and it sounds rather like revenge fantasy to me--it's nasty, but it is in response to deception, so I won't say anything more about it. He's a misogynistic and possibly sadistic arsehole and she's an antifeminist's favourite lying greedy stereotype. And I don't think the commenters on the forum said anything more than that.
I have two words for you... "WAAH WAAH"
I bet that anyone who doesn't outright worship the ground you females walk on is misogynist according to you.
Have you considered the possibility that there is NOTHING wrong with his behavior? Like, maybe the lying deceitful BITCH is the one to blame? He was looking for a sport fuck, and as long as he didn't sign a contract stating that he wasn't, well he doesn't owe her a goddamn thing. And neither does she, for that matter. When the relationship isn't progressing the way the female wants it to, its all because the man is a bastard, isn't it. Not because he might not be interested in being railroaded into a future she picks out for him.
The problem stems from the fact that anytime a man doesn't bend over backwards for a female, it is taken to be misogynist, anytime a man gets the upper hand against a woman, it must be because he's a big meanie, he hates women, has a small dick, fucks his mother et cetera ad nauseum.
The people on the Let's Be Nice Guys forum (well, the one I quoted) were saying that he should just accept what she did, and "maybe he will come to love the child." Never mind that he may be wishing to raise a child who didn't have a lying whore for a mother.
So, in summation, she was trying to lead the relationship in a different direction than he wanted, and she should suffer for that precisely because its so easy for a woman to abuse that power and lessening the trust of all women in the eyes of men.