The Wanted's Nathan Sykes and Ariana Grande have called time on their relationship.

The couple, who went public with their romance in September, have parted ways with a source revealing that they 'just weren't into it anymore'.

20-year-old Grande and Sykes, also 20, met when they recorded the duet Almost is Never Enough.

At the time Grande told Teen Vogue that she didn't find it tough to spend time together, despite their busy schedules. She said:  “It’s not as tough as people would think. We have the same music manager, so we can see each other’s schedules and plan little trips as often as we can.”

However Grande hinted all was not well the week before Christmas in a interview with a Florida radio station.

When asked about their relationship, she said: “You’re a little behind. We’re really good friends.”