Honey (Emma Barton) is trying to come to terms with Petal?s Down?s syndrome.
And viewers will see the young mum sink to her lowest point next month.
She stands over the tot and struggles to stop herself from smothering the baby before she flees Walford in torment.
An insider said: ?All the emotions that Honey has been struggling with come to a peak and she just has this urge to smother Petal.
?Of course she knows it?s wrong, but everything has been piling on top of her. She just manages to stop herself in time, but is so horrified that she runs away. Hubby Billy is then forced to go and search for his wife. He tracks her down and resorts to desperate measures to kick-start her maternal instincts.?
The source added: ?Billy leaves Petal by a canal all alone and Honey sees her and has to rush and save her.?
An EastEnders spokeswoman said: ?We never comment on storylines.
This will be a Good time to SHOW Everyone that Honey and Billy can Act and are not rubbish as other people on OTHER forums are saying they are RUBBISH actors which is NOT true.
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I can't say I'm surprised they are going this route. But still, what a sad storyline