Okk please help .... lol (10 points best answer)?

Ok well im going out with a boy who is in my cl who is tiny and im quite tall and everyone is taking the mick about how i would have to bend down to kiss him .... so although we have been going out for 2 months we still haven't kissed because we get embarred if i have to bend down to him. Then when we are at the cinema he gets all nervous and wont kiss me. How can i get him to kiss me this weekend whilst we are at the cinema? last time i cuddled up to him and he told me he got to nervous to put his arm around me but he was fine with all this stuff with his last girlfriend. How can i get him to kiss me and show more affection ??x