Boyfriend who is obsessed with my and tries to show it off!?

Well as a man who loves a woman with a nice I can kinda understand why he likes it. He does that for 2 reasons, 1 he really just likes it and likes the way it feels and looks. 2 He does this in front of other guys to show them that you are his so they can look but can't touch. Also it is an ego trip for him. He is saying "hey guys look what I got!! A y woman". He does need to become more secure in himself and stop grabbing you all the time. It is kind of bad and he needs to be a little more respectful of you than that.