Is my Fire Leaving in My Relationship?

Well! Well!! Well!!  Here it is, after the Dating and Laughing, Smiling and Talking, Text, Joking, etc etc:A few months has passed and now you are at a Standstill with your Partner. You seemed to Run out of Options to keep each other happy like you did The first 3 months. What Do you Do??????
What are some Tools or advice you would give to keep a relationship Fire Burning?

Is it true that sometimes people tend to do TOO MUCH at the beginning of meeting someone where you have nothing more to give after a few months? is that even Possible? hmmmmm interesting to say, but some believe that couples should just "let if flow" vs "Taking your time " while in a relationship in the course of the journey.

There is HOPE!! Don't give up! There are so many different avenues you can take to keep interest in your relationship. For Example: GO ON PICNIC DATES or WRITE HIM/HER A LOVE LETTER LIKE YOU DID IN ELEMENTARY. Be creative. Sometimes Watching television shows can give you ideas as well. Why not Use CHIVALRY??? remember that Word?

My Question is this: Why Is it that We Become BORED and LOSE THE FIRE in a Relationship? especially after 6months to a Year?

What are some Ideas or Tools to keep the Fire Flaming? is it possible? Are We Doing too much to Soon? Is the Partner Losing interest, or is it just the fact We are out of Creative ideas to Keep the Relationship Exciting? YOUR THOUGHTS........................