In the official The Sims 4 game, the "WooHoo" interaction—the game's euphemism for sexual intimacy—is strictly limited to life stages. While the game's ESRB rating (Teen 13+) allows for this interaction among characters aged Teen and older, the mechanics for Children (the life stage between Toddler and Teen) do not include any romantic or sexual options. The Core Game Mechanics

Q: Will the child WooHoo mod cause my game to crash? A: Not necessarily, but it's possible if the mod conflicts with other mods or your game version.

offers similar mechanical depth (like birth control) without explicit content. Important Safety Note

The "Try for Baby" interaction is a variation of Woohoo that carries a chance of pregnancy. While Woohoo itself is safe, "Try for Baby" is the only way to have a child through this interaction in the unmodified game. It is important to note that in the standard, unmodded Sims 4 , ; Child and Teen Sims cannot.

Sims 4 Relationship & Pregnancy Overhaul Mod: Lumpinou's RPO

Official DLC that adds scouting, school projects, and more nuanced parenting interactions.