Married At First Sight's Zoe Hendrix, 29, and her partner Alex Garner, 32, have split after three years.The mother-of-one announced the shocking news in a heartfelt Instagram post on Tuesday.She said they will continue to amicably co-parent their 17-month-old daughter Harper-Rose.'It is with sadness that Alex and I would like to state that we will be separating for now,' she wrote. 'We are determined to ensure our beautiful daughter Harper-Rose continues to receive the unconditional love and nurturing she deserves from the both of us.She added: 'Thank you to all our followers and friends who have supported us through the highs and lows over the years.'Marketing executive Zoe and plumber Alex found love in 2015 on season one of the Channel Nine dating show, which sees strangers 'get married' upon meeting.They were not legally married, but shared their hopes of tying the knot in April last year.'I am looking forward to a spectacular proposal and I've sussed out a few venues,' Zoe previously told The Daily Telegraph.'When the time is right, yes, we will definitely have a big wedding. They welcomed the birth of their 'miracle' daughter the following year in November 2016. At the time, the Melbourne couple gushed about their baby, who was born after the couple suffered a tragic miscarriage.'No words can really describe it,' Alex told A Current Affair.'Everyone tells you it's the most amazing thing. But I can't literally put into words when your child is there and the three of us are finally together and you've gone through such a journey.'Prior to Tuesday's announcement, Zoe and Alex were one of two couples still going strong after finding love on MAFS. Season two stars Erin Bateman and Bryce Mohr are the only pair who are still together.