It would take a very long time before NaLu would happened after the end of the manga. The first person/dragon he loved with his whole heart 'left' him in the middle of nowhere, not to be found anywhere until the Tartaros arc, and even then Igneel dies. . .And then we have Lisanna, who was his 'first love' and then 'died' and left him behind. Natsu would disguise his despair and loneliness behind his happy-go-lucky façade.
He would be reluctant to give his heart to someone again, but Lucy doesn't give up, and soon he does. Little by little.
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Fairy Tail Preferences and Imagines (Boys)
FanficFairy Tail preferences and imagines!! Request for the imagine part to happen!! Request!! [REQUESTS ARE CLOSED] See you inside~~ TOODLE POP. #142 in 'fairytail' - 8/8/18 #146 in 'manga' - 7/12/18