I just had this scene play out in my head.

Gilbert (little): *runs up to Fritz, putting his arms up*

Fritz: *rolls his eyes*

~time skip~

Gilbert (ten): *runs up to Fritz, literally jumping into his arms*

Fritz: *laughs and cuddles*

~time skip~

Gilbert (seventeen): *jumps into Fritz's arms, snuggling into his chest*

Fritz: *yelps, almost falling over* *cuddles Gil anyway* your getting a little too old for this *only joking*

Gilbert: Nein, I'm never too old to hug tackle my old man!