Answer: fickle

AnswerCrossword Clue
FICKLE

Not at all loyal

FICKLE

Not steadfast

FICKLE

Like the Finger of Fate on "Laugh-In"

FICKLE
Capricious
FICKLE
Like a frequent flip-flopper
FICKLEProne to flip-flopping
FICKLEImpermanent
FICKLEMercurial
FICKLELoving today, not tomorrow.
FICKLELike Lady Luck
FICKLEInconstant
FICKLEChangeable on a whim
FICKLELacking loyalty