There is no cheat, mod, or hack that enables romantic interactions between Teen and Adult Sims in the unmodded game. This is a **hard-coded restriction** by Maxis/EA to comply with global content ratings (ESRB T, PEGI 12).
**ModTheSims** and **LoversLab** host **adult mods** that remove age gates:
The Sims 2 simulates *life*, not *fantasy*. The age gate reflects real-world protections. Mods removing it exist but are **unsupported, unstable, and violate the game's rating**. Most players find creative storytelling within bounds more rewarding.
Recommendation: Use `aging off` + `testingCheatsEnabled` to craft multi-generational stories *without* breaking the engine or the T rating.