TAYLOR Swift’s romantic woes have pals concerned she could be turning anorexic – living off bread and water!

The 25-year-old pop sensation is famous for failed romances with boyfriends, including Jake Gyllenhaal and John Mayer.

“She doesn’t have a guy in her life, and that may be fueling her weight loss,” claimed a close friend.

“She works out a lot – but her waist has become so tiny, it’s ridiculous!”

Now her pals believe the 5-foot-10 star – usually weighing 120 pounds – is down to 110! The singer even passed on the menu recently while dining at swanky NYC eatery Butter Midtown and opted for just a piece of bread and water, a local paper reported.

While Taylor’s camp insists she is “happy and healthy,” friends worry that her diet is getting worse.

“She hardly ever eats in front of anyone and if she does, she’ll either eat very little or eat up a storm,” said her pal.