Fans were left stunned this week when it emerged that Oscar-winning actress Jennifer Lawrence and Nicholas Hoult had called time on their three-year romance.

While it had been suggested that the Hollywood couple's hectic schedules played a major part in the split, a new report claims that they ended things after a heated argument.

According to the Sun, the Skins star was left fuming after Lawrence chose to attend a Dior show in Paris rather than spend some quality time with him at this year's Wireless musical festival.

"Nicholas was pretty upset she opted out of seeing him as they rarely ever got to hang out," a source told the publication.

Although the pair, who met on the set of 2011's X-Men: First Class, in which she played Raven/Mystique and he took on the part of Hank/Beast, are no longer romantically involved they are said to have kept things amicable.

"They split on decent terms. They know that at the end of the year they'll be back on set together for the next X-Men film."

In 2013, Lawrence admitted that she struggled to maintain their long-distance romance saying that when they are busy they "agreed to mutually ignore each other".

"Neither of us gets mad when the other doesn't text back or call. Life's super-busy," she told Marie Claire.

"Obviously you know what they're doing, and you trust them. We're so young that it would almost be like if we lived in the same city, what would happen? We'd be living together. At least this way he's in the same boat as I am: We can go out and have our own lives and know that we have each other."

While some fans may be holding out for a reunion when the couple start working together again, speculation is already rife that Hoult is secretly dating Kristen Stewart, who plays his love interest in new sci-fi drama Equals.

"It's always a weird position to be put in any film where the director chooses two people and is saying, 'Hey, potentially in this world I'm creating, you two could fall in love,'" he recently gushed.

"Sometimes [this kind of situation] feels forced and tricky and awkward, but the kind of environment [director Drake Doremus] created was straightforward and easy. Kristen is a great actress, and that just makes it very relaxed and my job very easy."