The Coronation Street actress, who divorced her husband of two years Jamie Lomas in January, was pictured kissing personal trainer Matt as the two enjoyed a walk together.
Matt, 24, was seen strolling with his arm around 37-year-old Kym as the two walked their dog in a park near Kym's Manchester home.
Kym attended the National Television Awards alone in January
The couple have previously been spotted enjoying a couple of low key dates but this is their first public display of affection.
Newly divorced Kym Marsh and Jamie Lomas avoid each other at National Television Awards
Kym's friends have spoken about how she has been moving on following her split from Jamie, and say that while Kym and Matt are taking things slow, his romantic gestures have got her "smiling again".
"Gym done!! Feeling stronger! Thanks @mattwjbaker 👍"
"Kym feels ready to move on after Jamie and although it's early stages with Matt, she’s smitten," a friend of Kym's told the Mirror. "He’s trained her for a good couple of years so the kids are used to having him around and they like him. They see their mum is happy."
The former Hear'Say singer has three children, two-year-old daughter Polly from her marriage to Jamie and Emilie, 15, and David, 18, from a previous relationship.
In 2009, during her relationship with Jamie, Kym prematurely gave birth to another son called Archie, although he tragically died moments after being born.
Kym with her ex-husband Jamie Lomas
Kym and Jamie split in October 2013 and Kym cited Jamie's 'unreasonable behaviour' when filing for divorce.
'I'm glad Kym split from Jamie... he didn't make her happy': Oliver Mellor on 'affair' with Kym Marsh
In 2012, 33-year-old Jamie was photographed in bed with a woman who claimed to have had an affair with him, causing the couple to briefly split before reconciling their differences.
The Coronation Street star is mother to David, Emily and Polly
In 2013, however, the pair began living apart after allegations were made that Kym had had a five-month fling with her Coronation Street co-star Oliver Mellor.
Kym was previously married to EastEnders actor Jack Ryder in 2002 although the pair called time on their marriage in 2009 when it emerged that Kym had had an affair with Jamie.