Arwen:

Who They're Jealous Of :: Lindir

Why :: Lindir had always been a level-headed and kind elf. So, naturally, you had drifted towards him. Despite knowing she was overreacting, Arwen was still apprehensive.

Beorn:

Who They're Jealous Of :: Thorin

Why :: He'd never admit it, but he was jealous. Beorn always feared that he'd hurt you, but Thorin's strong attitude demanded respect, without the looming thought that he'd hurt you.

Haldir:

Who They're Jealous Of :: Boromir

Why :: You were Boromir's closest friend, but not knowing that when you had first met, Haldir was jealous and certainly held a vendetta against the Gondorian for a long while.

Nori:

Who They're Jealous Of :: Óin

Why :: You'd always been motherly, so you quickly bonded with Óin, the youngest dwarf, but Nori became jealous. "Nori," you'd begin, explaining that he was overreacting.

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I know Óin isn't the youngest dwarf in the books, but I feel like most people have seen the movies moreso than read Tolkien's works. So, I chose to use that version of the information instead. Nonetheless, enjoy!
-Raine