Despite being notoriously tight-lipped about their off-screen romance, Emma Stone and Andrew Garfield couldn't stay quiet any longer about their feelings for each other.

"It's like a dream to work with him [Garfield]," Stone said on "Good Morning America" today. "He's obviously one of the greatest actors I think we have alive today, and he's also just a remarkable human being, so I love him very much."

Stone, 25, and Garfield, 30, have been linked since 2011, around the time filming on "The Amazing Spider-Man" began.

Garfield initiated the public announcement of their love Monday on "GMA," saying, "She's a full genius, or she has found her genius and she's doing it so beautifully. I think everyone who works with her, everyone who brushes shoulders with her or even makes eye contact with her gets a shot of sunshine."

In the movie's sequel, "The Amazing Spider-Man 2: Rise of Electro," opening Friday, Garfield's character, Peter Parker, confronts a relationship dilemma with girlfriend Gwen Stacey, played onscreen by Stone.

Stone said she knew she wanted to play Stacey right away. "Auditioning with Andrew [Garfield] and Marc Webb, the director, it was kind of a no-brainer that I wanted to be part of it," she said.

Stone says she has made a practice of staying true to herself through her career, something she recommends for every woman out there.

"Advice to all the girls? I think authenticity is probably the most important thing and remaining true to yourself despite any pressure from outside forces," she said.

"That's something I struggle with as everybody can, and I just try to kind of follow my own path."