Lent him a key and he promised he would return it Sunday that same week (I offered to wait longer.) This was during October, now it's end of December.
At this point I don't really care about the key. I'm pissed that initially he appeared polite and thankful that I lent to him, even saying he knew its hard to trust people nowadays. Weeks after the deadline he has stopped messaging me, and never once has he updated me or messaged me voluntarily without me asking for a follow up. Now he isn't replying to my messages at all.
According to him, he had borrowed from several different people and hadn't returned, and that I was the "top of the debt repay priority." His other excuses included "not being able to trade at the moment" for a week or two, though it has been around 8 weeks so that time should've come and gone. Though he has said he was "trying his best" the only things he do are play CSGO when he's online and periodically change the first few letters of his name to something he thinks is cuter.
TLDR: Borrows keys from you and never follows up. Later lies about efforts of returning it while not doing so at all, playing CSGO and changing his name.