After his dad died and him seeing his mom repress her emotions I think he learned those habits plus he doesn't wanna be in a relationship where he's in a position where his mom was cuz he doesn't wanna experience the loss of a s/o and it's not really articulated in his mind and just sees it as his personality trait being stoic zz
After his dad died and him seeing his mom repress her emotions I think he learned those habits plus he doesn't wanna be in a relationship where he's in a position where his mom was cuz he doesn't wanna experience the loss of a s/o and it's not really articulated in his mind and just sees it as his personality trait being stoic zz