Christina Aguilera takes a shot at Adam Levine's masculinity

Christina Aguilera is not interested in The Voice co-star Adam Levine in that way and took a shot at Levines masculinity on Tonight Show With Jay Leno.

Eww! Hes like a brother or a sister, Aguilera said during Fridays show.

Leno showed video of Levine and Aguilera bickering on the set, in which the Genie in a Bottle singer called Adam a wannabe Justin Timberlake.

We get very competitive on the show, obviously, she said.

Despite all the competitiveness, the pair has learned to work together with Aguilera providing guest vocals for Levines band Maroon 5 on the hit single Moves Like Jagger.

Aguilera said she's proud of the connections she shares with Levine and her other "Voice" castmates.

"We can all tease each other and talk about each other, but we're like family where if we hear somebody else talk about it, it's not funny anymore," she said.