She and Natsu's relationship has gone a long way! He's HELPED her get to Fairy Tail! Personally, Natsu has gone to Lucy's rescue so many times! He's like her PRINCE CHARMING! But, then again, that's NATSU!! SO, ナツルー FOREVER!!!!!!!
ナツルー should be the winner because 1.They look cute together 2.Loads of people ship them even Mirajane 3.Just look https://natsuxlucy-fans.deviantart.com/gallery/33719473/NaLu 4.Natsu was the one who brought Lucy to the guild 5.He saved her from the fake Salamander 6.Lucy even saved Natsu and lastly i just think there a good couple XD
ナツルー for life. For one thing Natsu always goes to save Lucy not Lissana. Also he thought she was dead for what a couple of years? He moved フォワード, 前進, 楽しみにして afterward... she was his friend nothing もっと見る nothing less. But with Lucy it's like he can't live without her. He goes as far as to risk his life for her. So it's pretty obviuos.