In 2010, nine months after Holly became Niall's girl, he made it through to the final stages of The X Factor and needed to spend more time in London.
Holly tells us in our exclusive interview: 'We were apart for four weeks, which felt really long because we used to see each other all the time.
'One day Niall called and said: "I think we should finish because I never see you."
'I said: "Yeah, I know. I understand. So it's cool."
'I think he felt bad because he kept saying: "I'm so sorry." I tried to sound like it was no big deal but it was a bit sad for me.
'I liked him more than I'd let on. I missed him but we still talked on Skype and we met up whenever he was back.'
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