According to reports, the couple - who announced their engagement in December after eight months together - split over the weekend.
Dan Hooper has allegedly already moved his belongings out of the Manchester home he shares with Kym and her three children, Emily, David, and Polly.
"Their relationship has moved very quickly and both of them have very busy work lives which has unfortunately put pressure on them both"
Kym, who just signed another 12 month contract to star as Michelle Connor in ITV's Coronation Street, travelled from Manchester to London on Sunday night for the BAFTAs.
However she pulled out at the last minute, saying she was unwell.
Corrie then went on to win the much-coveted Best Soap award, with the majority of the cast climbing up on to the stage to accept their gong.
A source told The Mirror: “Kym and Dan have mutually decided to have a break. Their relationship has moved very quickly and both of them have very busy work lives which has unfortunately put pressure on them both.
“They are both very much hoping to work through what is a very difficult time for them and get their relationship back on track as soon as possible."
They continued: “Dan has moved out for the time being but they are in constant contact with each other. They’d reached a stage where they both needed some space but things are very amicable.
“It’s a real shame because everyone who’s met Dan thinks he’s a fantastic bloke and has had a really positive impact on Kym’s life.
“Dan’s family and friends love Kym to bits so they’re all just keeping their fingers crossed that they sort things out sooner rather than later. It’s very much a temporary break, they’ve not split.”
Neither Kym or Dan has commented on these reports.