Ronnie from 'Jersey Shore' -- Super Nice to SUPER Excited Fan

Not too many celebs would pose for pics with a fan who only minutes earlier dove through security to get close to them -- but Ronnie from "Jersey Shore" did just that yesterday ... making one girl's dream come true.

Ronnie was in the Bronx for the opening of his new Ronnie's Shore Store. On his way inside, a female fan bumrushed her way through security to try and get close to Ronnie ... only to be pulled off him.

But once Ronnie got inside, instead of brushing the girl off, he posed for a few pics with the girl ... who was holding onto Ronnie for dear life.