After sparking marriage rumors with her latest Instagram post, Vanna White’s fans want to know more about the relationship she’s been keeping lowkey. Since Ryan Seacrest stepped into Pat Sajak’s shoes on Wheel of Fortune, the two have been “battling” for White’s attention. However, it seems Seacrest might be winning her over after White confessed to developing a “crush” on the new host when the new season started. Regardless of either of their efforts, White’s heart was already stolen a long time ago. During an interview with People, the host admitted that she’s been in a relationship with her boyfriend John Donaldson for over a decade….