Natsu & Lucy are now basically confirmed to be in love with each other in Fairy Tail
Translation:
Q: Do Natsu & Lucy have feelings for each other?
Hiro Mashima (Author): Though it is not directly said in the manga, Natsu and Lucy have feelings that are more than just friends.
i believe in re-reading and re-watching your favourite books & movies at different stages of your life.the plot never changes, but your perspective does.