Sam sparked speculation that he'd dumped Stephanie after posting a tweet on Monday night claiming he'd withdrawn support from her while she's in the Celebrity Big Brother house.
But he later followed up to say that just meant he was coming off social media.
A rep has now confirmed that, telling the Daily Express: "We can confirm that Stephanie Davis and Sam Reece remain together as a couple. Sam's post related to coming off social media due to the unprecedented amount of attention her storyline is getting in Celebrity Big Brother.
"Sam & Stephanie remain strong as a couple and will address any rumours upon her leaving the house."
Sam's tweet came after Stephanie was seen cuddling up to her housemate Jeremy McConnell, who has said he feels more than friendship with the former Hollyoaks actress.
Jeremy said: "I don't want to look like a little homewrecker and I know she doesn't want to do anything. She's a gorgeous girl, she's sound, she's genuine and we have a laugh. And a bit of a flirt. Of course I flirt with the girl, it would be unnatural if I didn't and I'd be lying if I said I didn't find her attractive.
"It's more than friends, it's obvious."
Stephanie, meanwhile, burst into tears as she spoke about Sam and what he might be thinking when watching the show.
"I want Sam. I love him so much, I just want to see him. I don't want to do anything that ruins the one thing that makes me happy. I don't want him to be mugged off on the other side as I know Jeremy likes me. But he's my best friend in here and we have a laugh and cause mischief. But I'm devastated at thinking Sam is sad.
"I haven't done anything but I'm worried in case people say stuff. It's not like that. Just cause Jez fancies me. He keeps looking at me like he's in love with me. Even if Justin Bieber got down on one knee and proposed to me I would say no, I love Sam so much."
Sam tweeted on Monday night: "Hi everyone, I will no longer be supporting Stephanie Davis... Thanks for all your support and love you have given me!!"
He later added: "I would like to clarify that Stephanie and I continue to remain a couple irrespective of comments on social media surrounding our relationship saying that I've 'dumped' her as she still remains in the house.
"Monday's comment was me withdrawing my support via social media for the time being. I will be talking to her when she leaves the Big Brother house.
"I would never end a relationship over text or social media. I want to talk to Steph face to face."