The Saturdays singer Frankie Sandford, 21, is "heartbroken after her recent break-up with McFly's Dougie Poynter.
To make matters worse, Frankie, above left, has become the target of abusive mail on Twitter following false claims she hooked up with Calum Best.
Our source says: "Frankie is so upset. She had moved in with Dougie and thought their romance was for keeps. She is heart-broken after they split because of work commitments. They