Yes, it has been revealed that August is Mavis and Zeref's son. He was birthed by Precht aka Hades (who is also the second fairy tail guild master). August was conceived some time after X697.
AugustAugust was conceived of Zeref Dragneel and Mavis Vermillion some time after August of X697 through unknown circumstances, he was birthed by Precht, and had immense Magic Power, but was soon abandoned, and frequently stole as his means of survival.
When Zeref hardened his heart and threw Mavis's body to the ground in front of the guild doors, that must have been when the law of contradiction came into play yet again - he acted so carelessly to her lifeless body that it resulted in the creation of a new life - their magically created child, August.
If something hurts humans, we react instinctually to it—“fight or flight”—as do other animals. But plants don't have that ability—nor do they have nervous systems or brains—so they may have no biological need to feel pain.
8 They Are Canon Thankfully, by the end of the series, the confirmation came for the pair, Gray finally admitting his true feelings to Juvia, saying that she was his. Given how much Juvia had been by his side, it was about time that he manned up and admitted her liked her too.
Episode 158: Juvia and Gray participate in the same game, Juvia tells Gray she has no intention of loosing to him and he tells her to hit him with everything she's got. Juvia ends up falling in love with all the Gray statues around her. Juvia attacks Lyon when he gets close to Gray. Lyon and Gray see Juvia's panties.