New guy

So I've talking to this guy I met him in a an app I know it's weird lol anyway so I knew him 2 weeks ago we talked for couple of days and he want me to open my camera which I don't like doing and whenever we talk my mind goes blank I don't have anything to talk about and am usually not that talkative and I think he find me boring lol I don't have feelings for this guy it's just whenever we talk I don't have anything to talk about and I tell him that I just don't know why my mind goes blank lol any advice?