All this shouting, name calling, and general unpleasantness over some bullshit JP writing that it'll never happen in real life.
Most women do not become cum dumps cock sleeves. They require emotional manipulation, gifts, an inherent lack of self esteem, to become "in love" with a bad guy. JP games and their bad writing has brain washed an entire generation of NTR gamers thinking you can "fuck a girl so she can't get enough", same thinking where guys think they can "fuck lesbians straight".
A realistic NTR is one where your mother dates a douchebag. Here, you can tell her he' a douchebag and if she's like any normal moms, she'll trust your word over his despite how good the sex is. OR she can placate you and secretly does it anyway because 1) he's hot, 2)she has low self-esteem and she thinks this is as good as it gets and 3) he has money and she likes money.
Either way if she continues to date him, mom has lost my respect and really is it really NTR? It's just sad and it's very common. Not sexy at all. It's just pathetic.
Now if he's ugly. Well why would Mom settle for ugly fat fuck cheeto dick cheese man? If she's hot, capable, intellectual? Either way it seems like most NTR writers and consumers just haven't matured out of the "my mom got a divorce and I don't like my step dad" phase.