User blog comment:IamJakuhoRaikoben/Chapter 396: Air, Review./@comment-4449950-20140813065040/@comment-5303512-20140813230143

I don't think Erza and Jellal kissed, it was shown that they were about to but Jellal pulled away.

Anyway I think the first official kiss was Hibiki and Jenny.

I think that Gajeel x Levy's lip contact had a more significant meaning because Gajeel for most of his life has lived in Darkness and then there was there was a light and that light was Levy, she then gives him her light.