yeah, either that au someone will tell him. then he'll probably think about it, a lot. Natsu is still in so many ways a kid. i don't think he fully understands love. but i hope he will realize that he has feelings for her too & start to understand it more.
I think it'll be like natsu getting zaidi overconcerned about lucy and then somebody will bring that up to him and tell him maybe he loves her. Kawaii ^_^ 'cause we know he'll never figure that out kwa himself.
I sure do hope so. He will probably realize it kwa the end of the series and realize his feelings for her too. I mean, isn't it obvious that Lucy likes him and he likes Lucy? If Hiro Mashima thinks that what Natsu does to Lucy are only normal for friends, then I suggest that he thinks again. I will personally kill Hiro Mashima if he doesn't make Lucy and Natsu realize their feelings for each other kwa the end of the series.