Keeps asking again and again?

ok well my guy friend have been talking like everynight lately on aim and he keeps asking like "wanna ***" and we were both joking and hes like justt kidding, but then the other night he like asked it again and this time i was like "yes!!" and ive said tht before and he usually said just kidding, but hes like " same here" and u just wrote like hahah and he writes "lmfao ( a big smile face), if you know what i mean" and i had noidea wat he meant anyone know?