Analyzing My Fluctuating Dynamics

I've been exploring a dynamic that confuses me lately. Sometimes I feel the urge to be taken care of and regress into a little space, while at other times, I crave being in charge and nurturing someone else. This fluctuation puzzles me, does it indicate instability or just varied desires? My partner is incredibly supportive, but we both wonder if this constant shift is normal for long-term relationships. Any advice on how to navigate these feelings?