Mithrun has been feeling strange around you. He asked his fellow squad members for advice and they told him that it was love he was feeling. The elf didn't believe it at first, but as days go by he becomes more aware and realizes- yes. He does love you. You are now one of his fewest desires.

He showed subtle hints of his infatuation with you, even the other Canaries members would help him out so you would notice. However you are absolutely oblivious so you don't notice and he is bummed out.