i get really upset when my boyfriend speaks to his dad and idk how to stop it

my boyfriends dad keeps talking to him about cars to buy and stuff and it makes me really sad like whenever him and his dad talk i just want to cry cause i never had that stuff. i wish i had a boy childhood and stupid gender roles or whatever you call it didnt exist because im getting upset because i wasnt raised to know things about cars. id love to feel like a boy and have conversations about cars with my dad but i wasnt raised like that and its really upsetting to me to see it because its what i couldve had if i was born male idk how to stop feeling like this because i just want to enjoy my time at my boyfriends house without feeling envious of him

and i also dont know how to bring it up with my boyfriend without it seeming really mean. hes fully supportive of me and i love him so much but i dont want him to take it the wrong way but he keeps asking whats wrong and idk how to respond to him

hes living the life i crave for and seeing what i couldve had just makes me want to cry