Friends.

So lately my friends have been annoying me so much but i do not know why. for example when i have a brand new Gatorade one of my close friend takes my Gatorade and ill be playful and all until i ask for them to give it back and they just keep holding my Gatorade and he keeps doing this over and over again when i am being serious with them.
or one of my new friends takes my Gatorade´s label off. i never do this to them what is what makes me so mad about the situation and he goes trough my purse without my permission he sill plays with me even when he heard what i said and my faimly is like ¨he probably thinks your playing¨ but clearly i am not and i just yelled at him and now i feel so bad because ii don´t wanna ruin our relationship