Family Secrets Mod by dubbledeez
"Family Secrets expands your town’s capacity for drama and intrigue by offering player and NPC Sims greater control over the legitimacy of their offspring. Romantic affairs and unwed pregnancies will present players with the choice of revealing or hiding a child’s true parentage, or even attempting the “Cuckoo” action, which can convince a birth parent’s partner that a child born from an affair is actually theirs! Family Secrets also expands The Sims 3 Adoption system, allowing Sims to choose between joint or sole adoption, as well as the ability to foster children. This mod requires no expansion packs or supporting mods to operate. While it does not enable any non-default relationship options, it contains built-in support and decision-making considerations for same-sex, intergenerational, and interfamilial pregnancies. This mod also fixes a known base-game issue wherein certain non-standard pregnancies would cause the Family Tree menu to crash the game. Enjoy this mod, and please comment on any issues you may have with its performance.
...continued on MTS."
More Info + Download @MTS.
Another fun mod!
