Does anyones man act stupid around a certain friend of his?

Katt • Cali 909
My bf has this friends he known since forever but ive noticed he acts so stupid towards me around him he gets really rude with me and doesnt respect me and its only that friend idk why anyones else gone thru this? I find this childish but i never been thru this my ex of 6yrs has mad respect for me plz help i feel pissed