Not really but the manka made a baby for them
No, besides acting like a perv sometimes I don't believe he really has those kind of feelings for Lucy.
I think its when natsu said that anna sensei has the same smell as lucy, then gajeel said "so that's why u like anna sensei" then natsu "yeah, so what" (which means natsu likes lucy), and lucy is blushing. well Im not sure what kind of like it is (family or lovers) but from lucy's reaction I think its lovers.
And the other hint is, in the last chapter in lucy's bedroom, natsu grab lucy's upper arm, and from her reaction its clear that she is hoping for something (a kiss I guess, because she said "going to do something"), though natsu didnt do anything and lucy looks like she's very disappointed and upset.
NaLu supposed to be the main ship but Hiro never give us any clear ideas what is their relationship in the last chapter (╯°Д °)╯╧╧ only hints..AAAAAAAA
Can someone tell the chapter or chapters that confirms that natsu loves Lucy?? or vice versa