Harry Styles and Olivia Wilde have called it quits on their two-year romance – and while it was put out there that the “amicable” split was simply down to their busy schedules, our insider says it was a lot more bitter behind the scenes.It seems the 28-year-old singer found the pressures of a relationship with director Olivia, 38, just too much. Our insider says, “Harry had some wonderful times with Olivia – this was by far the most serious he’s ever been about anyone.