2 year old loves little brother 🥰

My 2 year old (he’s my 3rd baby) has been wanting to touch bellies lately he comes up lifts up his shirt or unzips his feet jammies just to put his belly on mine and hug me. 😂 he says oh so warm baby brother and the kisses my belly and goes. I think it’s so cute however my 6 year old was telling my mother in law about it the other night when we went to visit and my mother in law said it’s creepy..🤷🏼‍♀️ my daughter was like no it’s cute grandma and walked away I didn’t say anything but she knew it bothered me that she said that. Is it creepy? Lol he’s always kinda liked skin to skin he was breastfed for 18 months so I get why he would.