Selena Gomez (left) and Ellen DeGeneres, with Justin Bieber on the pillow
Michael Rozman/Warner Bros.
03/22/2011 AT 08:40 AM EDT
Back in September
, when her relationship with Justin Bieber
was still just being noticed, Selena Gomez
was pressed by Ellen DeGeneres
about what exactly was going on between the two
"He's little. He's like my little brother," responded Gomez, 18, about Bieber, who turned 17 on March 1.
The singer-actress returned Tuesday to The Ellen DeGeneres Show
, and the TV host asks Gomez again, "He's like your little brother? ... What do you have to say now?"
"I don't know. I don't know," replies Gomez, who's been bravely mum
about what exactly is
going on between her and Bieber.
"Well," presses DeGeneres (who's great at prying about such things), "you were trying to hide it still, right? But now you've made it public."
Suggesting this is more than simply a sibling-like relationship, DeGeneres also says, "You went to the Vanity Fair [Oscar night] party
[together] and made me a fool."
With a laugh, Gomez replies: "No, I really didn't."
"Yes, you did!!" counters DeGeneres
"I promise you, I didn't," insists Gomez. "He's just sweet." Another laugh.
"He is," acknowledges DeGeneres. "He's sweet as can be. But he's not like your little brother, is he? No, he's not. And he's a fantastic guy. You can't try to hide that forever."
Adds DeGeneres: "I know you all were sneaking around but that's crazy. You're both huge stars, and you can't hide from us."
Says Gomez, "I didn't lie to you. I didn't, though. I'll say that."
"No, you didn't blatantly lie. A little brother is not someone you want to date."
"Well, no," concedes Gomez. "That would be weird."
Advises DeGeneres, sounding something like a Mother Hen: "That would be wrong and weird in so many ways."
Capping the discussion, DeGeneres presents Gomez with a pillow to take with her on tour. It has a picture of Justin Bieber on it – so Gomez will not miss him.