When Katara finally realized it, what she really felt towards him, it didn't come as a shock like she would have expected it to. She didn't feel like she had an epiphany, or any overwhelming feelings that one usually associated with falling in love.
What Katara did feel was contentment. Happy and content at finally having admitted to herself that yes, she does indeed love him. She loves him with all her heart.
Her heart must have already known of her true feelings long ago. Long before her mind even thought to entertain the idea. Katara tried to think back to all of their encounters, from the moment they met up until the present. And yet, she couldn't pinpoint exactly when she began to fall for him.
When had she started to feel that way towards him? She couldn't figure out the answer. It seems that, when she finally realized the true extent of her feelings, she felt as if she had always been in love with him. As if the beginning didn't even exist. And she also knew, in her heart and mind that it would never end.
It was like a river. Seeing the water flow, there isn't a starting point in sight, just as there is no end. It seems as if the river goes on forever. A river doesn't have a clear beginning, nor does it have a clear ending. But that doesn't matter, what does matter is that the river is there, flowing to the brim with water. Just like her love for him.
In the end, it doesn't matter when it all started. Maybe that beginning doesn't even truly exist. What matters is that she does love him, and she loves him with all her heart.
A/N: I hope you liked it. If you're wondering who it is Katara is thinking about, I did that in purpose ;)
Whoever it is is up to you readers. Actually, I'd be interested in seeing just who you believe this could be (so review) :D