The former Geordie Shore star posted a saddening message on Twitter on Sunday night (30 August), leaving her fans clearly worried about her.
Marnie tweeted: "I couldn't of ever imagined what this day would bring. My heart is broken."
While she did not elaborate what was the cause of her heart break, many of her fans assumed Ricky Rayment was at the centre of it.
The pair, who announced their engagement in June, are rumoured to have split up.
I couldn't of ever imagined what this day would bring. My heart is broken— Marnie (@MarnieGShore) August 30, 2015
On Saturday, Reveal reported that Ricky and Marnie had worried fans after showing signs of a split on social media.
Former TOWIE star Ricky has removed all references to fiancée Marnie on his Twitter bio, and changed his picture to one on his own.
She also reverted to a photo without Ricky, while eagle-eyed fans noticed that the couple haven't tweeted each other since 12 August and haven't been seen together for some time.
This weekend, Ricky arrived in Brighton for a personal appearance. A fan tweeted that although Marnie was supposed to be attending, too, "she was taken off all the posters" and did not take part.
Fans have been quick to comment on Marnie's "heartbroken" tweet, with many assuming blame on Ricky's part.
One wrote: "It was only a matter of time before he was going to do that."
Others simply sent their love or offered sympathetic messages like "stay strong".
Ricky has now flown to Thailand for two weeks filming ITV's celebrity fishing series The Big Fish Off.
The singer arrived in Bangkok on his birthday (Sunday 31 August) and thanked fan for their well wishes.
But, again, no message from Marnie.
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