I doubt teen Potato ever viewed Wolf as father, since he met him around 6 years old and got separated from him already at 7 years old. It’s ridiculously short period of time and it’s such a deep childhood. Who knows when they started to live together again( earliest we saw is 16 years old). And even after that, Potato has such a sweet mom, it’s not like he desperately need another parent figure, not anymore at least. Grown up Potato is pretty obvious about his feelings tho