Promotional 1 / 11

Lady Gaga just can't stop gushing over her boyfriend Taylor Kinney! The 27-year-old singer has often kept mum about her relationship with the "Chicago Fire" actor, but more than ever she's been opening up about their romance in public. During an upcoming appearance on "The Ellen DeGeneres Show" that's set to air Monday, Nov. 25, the ARTPOP songstress reveals when she first realized her former music video costar could become something more.

PHOTOS: Gaga's amazing body evolution

"We were in the middle of this scene and I remember that he kissed me and it wasn't scripted for him to kiss me," Gaga said of Kinney starring in her 2011 "You and I" music video. "I was sort of like was um, you know, was that real or was that fake? He didn't really say anything and that was fine by me and we kept filming."

PHOTOS: Unlikely celebrity couples

During her interview, Gaga also admitted that her hunk is a "weirdo" just like her. "He is extremely strange, actually, and we complement each other's weirdness," she said to DeGeneres. "That's actually one of the first things he ever said to me. It's a Dr. Seuss quote, that you find in someone else a 'compatible weirdness.' And it was one of the first things he said to me."

PHOTOS: Gaga's craziest hairstyles

She added: "And you know, at the end of the day he's my best friend. And having your lover be your best friend, I mean, it's the best thing ever. It's the best thing I can say about it."


Undressed 2013: The Year in Celebrity Fashion Faux Pas

Who did unflattering bleached eyebrows better, Miley Cyrus or Lady Gaga?

Lady Gaga's 15 looks that we don't understand