Love takes two

This is a Nali fanfiction, however it also does have some Nalu elements. How will Lucy react to Lisanna and Natsu officially being a couple?

When Natsu suddenly stops showing up at Lucy's apartment, she becomes worried about his tendencies. In an attempt to figure out why he's been so distant lately, she heads to the guildhall only to see the direct cause of the problem was a lot more complicated than she thought.