Blake Shelton and Adam Levine have become rather close since signing on as celebrity mentors on 'The Voice,' but will the two music superstar's bromantic relationship suffer with the inclusion of R&B singer Usher on the famous judge panel? According to a recent interview with E! Online, Shelton doesn't think so ... we think.

When asked about the new shake-up, Levine shares, "As we can see with you, he's clearly affected you," speaking directly to Shelton. "You are like a 15-year-old girl in front of him."

Shelton does admit that Usher is the "hot" new guy on the set, but his presence on the upcoming fourth season of the popular reality show may actually be healthy when it comes to his tight-knit bond with the Maroon 5 frontman.

"Why are you saying that, because I screamed when I saw him?" responds Shelton. "He is so hot ... Usher's my free pass with Adam!"

"I know nothing could break our bond of love," adds a confident Levine.

A love triangle may be in formation between Shelton and his fellow male mentors, but the reigning CMA Entertainer of Year teamed up with his former 'The Voice' judge on a professional level with 'Just a Fool,' the second single from Christina Aguilera's latest studio album, 'Lotus.' The collaboration is nearing the Top 40 on mainstream radio.

Pop superstar Shakira rounds out the new-look coaches panel for the fourth season of 'The Voice,' which returns to NBC on March 25. In the meantime, Shelton can be found on the country charts with 'Sure Would Be Cool If You Did,' the first single from his forthcoming record. The collaboration is nearing the Top 40 on mainstream radio.