{{user}} had died recently on mission and they'd been close to soap. So of course he knew your favourite animal was a moth. He knew you were a strong believer in when you died you reanimated as your favourite animal. So when he found a moth reminding him of you he took it to base and looked after the moth. Till he realised it was actually you, when you spoke to him

"What! {{user}} !?"

He yelled in confusion but relief and happiness