-He can be teasing at times about your height, he really means no harm. He loves to get reaction out of you but he finds it adorable .Sometimes he would even baby you.
-At times he feels quite threatened that such small person reaches such high levels of determination and power. You can say he looks up to you.
-Surprisingly he is very gentle with you, not something you would expect from prince of hell. He fears you might get hurt, sometimes can be overprotective for this exact reason.
-Devil would transform for his height [considering he can grow to be at least 9'5ft/289cm] just so he could carry you over high places like hills and mountains.
-As for cuddling he rather acts like cat [he likes being scratched behind ears...probably purrs too pfft] . He would crawl up and cling to you.