The presenter confessed that she split from her partner of three and a half years "for no apparent real reason", though her trips to film Total Wipeout in Argentina were a contributing factor.
Byram told Hello: "No break up is easy, especially when you're engaged. You've promised yourself to a person and when you break that promise for no apparent real reason, it's hurtful all round.
"We're both gutted and in a really hurt place. You realise absence doesn't make the heart grow fonder, it just makes it grow distant."
She added: "The succession of life is that you get married, have kids and a white picket fence and I was finally on that track. But my instinct said it wasn't right. Whether it's right or wrong, I'm at peace with my decision."
Byram said that she is "a romantic" at heart and hopes to fall in love again when the pain of her break-up is over.
"I love being in love more than anything but I am not in that place right now," she said. "I am not ready for a relationship again."
The 38-year-old has been tipped to front a revamped edition of The Big Breakfast this summer.