Fifth Harmony star Camila Cabello is insisting she is single despite rumors she is dating fellow pop star Shawn Mendes.

The Worth It hitmaker and Canadian teen idol recently sparked speculation they have struck up a romantic relationship, but Cabello set the record straight during an interview with Ryan Seacrest on Wednesday (23Sep15).

Seacrest asked the ladies of Fifth Harmony which of them were single, and Cabello, 18, immediately raised her hand and said, "I'm single."

Seacrest mentioned the gossip of a possible relationship with Mendes, and Cabello said, "We're super, super close friends. He's an amazing guy - he's great."

Cabello previously dated another teen pop star, Austin Mahone, last year (14).