Bakugou never grew up to be touchy-Feely as a kid. What sparked it was the fact he was never hugged or given affection as a kid which caused his mental health to scar. Bakugou lost alot of that mental build in Therapy but he never lost his desire to cling. to what? You. If you left him alone for more then 5 minutes he'd start crying like a baby & scream like a banshee, Bakugou felt complete with you, you quickly learned how to basically be like his 'mommy' 24/7 everyday of every minute