Ariana Grande has hit back at rumours her relationship with Big Sean is on the rocks.

The 21-year-old singer who began dating the rapper in October last year, took to her Instagram account yesterday, to share intimate photographs of the couple during a recent trip to Lake Tahoe, which lies on the border of California and Nevada. She posted alongside an image of the pair: "Man, I had da best time in Tahoe last week!" (sic). It was reported the couple had been having some problems, after Ariana found saucy photos of other women on Big Sean's phone.

However, a representative for Ariana denied the couple had broken up, saying: "It is absolutely not true." The brunette beauty was reportedly "devastated" when she learned he had been exchanging the racy images. A source said: "He tried to play it off and swears he hasn't hooked up with anyone since they became official, but Ariana was devastated."

However, Big Sean, 26, is said to be "so in love" with Ariana, and is now trying to make it up to the petite popstar.