The 20-year-old proposed to girlfriend Perrie Edwards earlier this year, and although the pair originally wanted to wed next summer, the plans are on hold until at least 2015 because of both singers' working commitments, reported Contactmusic.
"Zayn can't set a date at the moment. In fairness, he has no choice as he's too busy next summer and has to see what the band's schedule is for 2015 - but he won't know that until August 2014.
So it means Perrie can't even begin to plan things," Little Mix singer Perrie is said to be upset their big day is so far away, particularly after One Direction fans started tweeting her horrible messages.
"Zayn's promised to move mountains to get the ceremony on for 2015, but Perrie worries it could be one of those showbiz engagements that never goes the distance.
She sees a lot of nasty stuff online predicting they'll never tie the knot. She's confident in public about it and says they aren't rushing it, but she's like any other girl who wants to enjoy the build-up to her wedding," the source added.