There's a certain way that Gabe looks at Nolan. It's nice and protective and probably very loving but Nolan doesn't really focus on that. It's more just... nice to be watched.
Headcanons under the cut.
Gabe has a teddy bear that Nolan got him and Gabe dresses the teddy bear up like Nolan and calls it Nolan-Bear and takes pics of it in positions similar to pictures he has of Nolan
Nolan draws constellations between Gabe's moles, birthmarks and freckles
Nolan takes a lot of pictures of Gabe and keeps them in an album labeled 'my love'
They have cutesy pet names for each other and they are the kind of couple who speaks in code around each other
Gabe cooks a lot, mostly food his mother cooked for him but with a lower spice level as Nolan can't handle spice
Neither of them drive so they both really enjoy taking public transit. They also bully Liam into driving them places they want to go because bullying Liam is one of their love languages
They are both cuddlers and they spend a lot of time sitting with each other and cuddling or wrapped up in each other
Nolan is the little spoon and Gabe is the big spoon
They are both pillow hogs in their sleep so their bed is mostly pillows