Relationship

So me and my BF have been dating for 3 1/2 years & he still feels the need to go through my phone whenever he gets ready, I let em. Because I know I'm not doing anything. Him on the other hand , will have a heart attack if I try to touch his. I'm just at a loss for words because , 3 YEARS , & you feel like you need to go through my phone like a lit ass child & it's getting very tiring . What do you all think or what would you do?