A loyal person is not fickle. Rather, he lovingly attaches himself to someone (or something), sticking closely to that person (or thing) even through difficult circumstances.
تَتَمَيَّزُ صِفَةُ ٱلْوَلَاءِ بِٱلدِّفْءِ وَٱلْوُدِّ .‏