Lee Ryan has reportedly dumped his fiancee, who is five months pregnant with his child.
The 25-year-old star - who met Samantha Millar after she sent him flirtatious photographs through his MySpace page - left the blonde beauty in "floods of tears" after he decided to end the relationship.
A source said: "The break-up came as a complete shock to Samantha as she thought everything was going really well.
"She is distraught and doesn't know what to do - it is horrible enough to be dumped anytime, but with her pregnancy, and all the hopes they would build a future as a family, it has left her in floods of tears."
Lee - who is believed to have moved in with his former Blue bandmate Simon Webbe - previously said he was ready for the "quiet life" with Samantha and their new baby, but his decision has left the pretty 24-year-old reeling.
The source added to Britain's Star magazine: "Being with Lee was a dream come true for Sam, as she has been a massive fan of Blue for ages. Although Lee is known as a bit of a womaniser, she thought she could tame him.
"She has been by his side through everything, including his court case for assaulting a cab driver last month, but now it is turning into more of a nightmare."