For every generation, there are teen heartthrobs: those whose posters line the inside of our lockers and whose faces grace the cover of Tiger Beat. Part of their charm is the promise of a bright future ahead; but for many, that promise is never fulfilled. The teen actors grow old, and we grow up--and grow disinterested. This profile remembers the teen heartthrobs who drove us wild, while also showcasing the lives of those former teen hotties who remain heartthrobs as adults: they may no longer be teenagers, but they're still successful, celebrated, and just plain hot. Featured heartthrobs include: Christina Applegate, Leonardo DiCaprio, Jessica Biel, Alyssa Milano, Mario Lopez, and Jessica Alba.