VANNA HAS NO TIME FOR LOVE!

LEGGY letter-turner Vanna White is putting romance on the back burner as she spins about the changes on Wheel of Fortune - and her soaring stress isn't helping the game show gal's relationship with devoted beau John Donaldson, sources snitch.

- 

"The show's taking so much of her time and energy that it hasn't left much opportunity for loving or date nights," an insider dishes. "Even when she's not working, she's stressing over all the changes and challenges on set."