Unexpected Artistic Inspiration

I'm an artist in a long-term relationship with my partner. We've been together for years and everything has always felt so normal. But recently, something unexpected sparked between us. It was as if our usual routine had turned into this wild canvas of color and sensation that we both dove headfirst into without hesitation. Now, I find myself wondering if it's okay to be so excited about exploring new dimensions in our relationship. Is this just a phase or is it normal for long-term relationships to bloom like this? What do you think?