Advice help!

So I know seeex isn’t important but I been talking to this guy for a month we messed around but nothing lead to having seeex. Anyways, he fingers me touch me but when I try to grab his d!ck he ALWAYS moves my hand. Fine I respect that . I ask him if he’s insecure about his size but he says no . The next day when I came over he’s like “ let’s have sex” but when I agree he says nvm. I ask him whats wrong and he says nothing. I feel like he’s insecure about his male parts has this happened to you ladies?!?🥵 he never lets me near his d!ck.