It has been some time, but I am here again

At first you were just a small thought now and then
A tiny seed among the trees within
But as time passed the seed grew, my love for you
Its branches spreading to every corner of my mind
Whether I am asleep or awake, I cannot think of anything else
Its roots piercing deeper into my heart
Whether I am happy or depressed, I cannot love anyone else
A tingling feeling underneath my skin
A tree of love has grown within