How does Leon really feel towards nico?To me it looks like he really likes him but he's thinks he's to straight to admit it. Am I wrong?
Nope, you are absolutely right UuU !
So here’s the thing about both Leon and Nico.
Leon is “straight”, according to himself, but Nico has caught his attention in a not-very-straight kinda way (which he doesn’t want to admit). Even so, they’ve become really close, and now Leon considers Nico his best friend, the best friend he’s ever had, and the most important person for him in the world.
Nico considers Leon his best friend too, but it’s complicated because Nico fell in love with Leon, and he doesn’t want to tell him because he knows Leon is “Straight” (he’s told him so).
So Leon’s “Let’s do homo things but as bros” advances (specially when he’s drunk) make Nico’s heart flutter, but he knows he needs to keep his feet on the ground.