fick·le
[fik-uh l]
–adjective 
1.likely to change, especially due to caprice, irresolution, or instability; casually changeable: fickle weather. 
2.not constant or loyal in affections: a fickle lover. 
fickle
fick·le
[fik-uh l]
–adjective 
1.likely to change, especially due to caprice, irresolution, or instability; casually changeable: fickle weather. 
2.not constant or loyal in affections: a fickle lover.