I think confessing your love to/with Lo'ak would be after a misunderstanding that led to you drifting apart for a while.
Lo'ak tracks you down one day and gives you something that you like, or that you might like. Fruit, beads that he carved for you, jewelry, flowers, little trinkets, anything.
"Your favorite, right?" or "I thought you might like this."
The confession would be like that one TikTok sound, "calm from loving". From "The Get Down" I believe.
"I wanna be your man, baby. I know you like me. And I like you so much, I can’t hardly breathe. I like you so much, I feel like I got thunder and lightning inside of me. You make me nervous. But you also make me calm. Real calm. Calm almost like how Eywa must be calm, you know, sweetheart? Calm from loving. I love you."
When your silence starts to become too much, he starts to question himself.
"Yawne, I love you... what did you think about that?"
"I think that..."
You take his hands in yours, as you look into each others eyes. Stares never wavering.
"I see you,"