Adult is a life stage in all games in The Sims series. In The Sims 2, it is normally the longest life stage in a Sim's life; in The Sims 3, it is the same length as the.
Young adult is an optional life stage introduced in The Sims 2 with the University expansion pack. In The Sims 3 and The Sims 4, it returns as the fifth life stage.
So does anyone know of a hack that allows a teen and an adult to have a romantic relationship with That's because ACR is a Sims 2 mod.