Why would a guy you know want pics of you?

So this boy who likes me and our family's are really close friends so i wont go out with him but we txt and last night i told him bye and he said wait send me a pic so i did and hee asked me to send him more so i sent him to more and then i said tell me why you want me to send you these pics of me and he said there is just something about you WTF does he mean?