This thing is so simple. Side chicks do not owe the wife any loyalty, and wives do not owe the side chick any kindness or inclusion when they decide to procreate with married men. If you are knowingly sleeping with a married man, and have no regard for his wife, if fall pregnant don’t expect her to have any regard for you or the child you bring into the situation. It may not make sense to us but how people decide to navigate and negotiate their marriages and forgiving their partners is between the partners, unfortunately they don’t have to extend any of that kindness to anyone else, even if we feel like it’s the moral thing to do. The only person who should be expected to extend any love or care is the father.