I think it is a combination of too soon, and cold feet (looking ahead for what might happen) as far as the "Spark" don't worry too much about that, because it is too soon to light the fire. I have known a lot of people in your situation and have seen it smoulder awhile then suddenly fireworks. I believe that is much better than a spark.

so put a good face on it, stay positive, and if it really is meant to be it will happen and you will enjoy the fireworks!