okay, this is a rather interesting analogy but i'll do my best to relate. My drawings and I first "met" in kindergarten. From that point on, we became really close friends because we always wanted to see how much we both could change as years would go on. Then, you could say, in a way, we became an official "item" when we decided to commit ourselves to a decade-long love story that we didn't share to the public until 2 years ago (which means 8 years to fully develop our relationship).
Now keep in mind, there IS no such thing as a relationship without its issues. There were days, weeks, and months where I just didn't feel motivated to continue on this journey with drawing, especially when times were tough, but then I reminisce back to our early glory days and build courage to keep motivated. Even though this decade of our lives officially ends this year, me and drawing still have a spark for each other that hasn't vanished and eager as to what the future has planned for us.
What am I trying to say overall? It's okay to lose motivation sometimes because everybody does. How you express the passion towards your art is completely up to you, and if art is something you absolutely treasure then believe me, you will always find a route that leads back to spark that got you "attached" to it in the first place. Best of luck.