The Celebrity Big Brother winners, who became engaged on live TV last October and are expecting their first child together in June, were reported to have broken up after a "catastrophic" argument.
Reid released a statement this weekend claiming that they are still "very much together and very much in love", however Houghton has since stated that at least part of the initial story - her decision to move out of the house they share - is true.
"You might have read reports saying that I am sleeping at my flat while Alex has been at our house," she wrote in her New! column.
"This is true and I have very good reason for that but I don't want to go into any more detail because it's extremely raw right now.
"It's been a really upsetting and difficult week for me and not the best thing to have to go through when I'm so close to having the baby."
Reid last month slammed similar reports about his wedding to Houghton being called off, describing them as "not very nice".
The cage fighter's divorce from first wife Katie Price was finalised in March, 14 months after the couple split, while Houghton divorced her fellow Big Brother housemate Samuel Preston in June 2007 after ten months of marriage.