There is no way you can know this?
Also.. i believe i am not on his trust list, not sure though.
Sure there is a way that someone can know this. Simply go to
https://bitcointalk.org/index.php?action=trust;full;dt and find out who your name is under. Also, LoyceV publishes information about people's trust lists, weekly.
http://loyce.club/trust/ It appear's Direwolf added you recently because your name is not on his list in Loyce's latest data, which was last updated on 06/22/2019.