Don't think so.
Mashima is creating a romance around Natsu and Lucy. Lisanna with someone else. When lisanna came back her and Natsu don't interact as much anyway. Asu always hangs around Lucy.
posted over a year ago
Mashima is NOT creating romance around Natsu and Lucy.
Agree with you, that's why there are so much Nalu hints anywhere, even in most of special chapters. Some people also predict that the ending of FT will be like Nashi read a book, that book is Lucy's novel titled Fairy Tail. (Aww <3) But Mashima not yet give us hints about Lisanna and another man. I hope she will find her own prince charming soon :)
Well, coming from me, I don't actually know what may occur for the two of them. Possibly or not, I just don't know. Sorry if my answer isn't helpful. XD