keep your bad vibes out of my cornflakes

From the beginning of the Avatar arc, it became apparent Lucy was not all that happy in Natsu’s decision to leave and train for a year leaving behind one letter to her. We see it in two key instances: 

When Natsu finds out the guild has been disbanded 

When Natsu tries to chastise Gray for leaving Juvia without a word. 

And in both these moments, Natsu’s reply is the same: stunned silence accompanied with some sweat drops. This reaction gives us some indication that Natsu is aware that Lucy is upset with his actions but that’s as far as the narrative goes in exploring this rift in their relationship. Many have often cited that Natsu helping Lucy bring back the guild is in his way an apology for leaving her but is that enough? Is that a sufficient way to give that storyline closure? 

Natsu, breaking into her apartment-

affection