if affectionate person is what you want and you don't see it in him then your choice is obvious you got to move on, because he's not going to change....but if you like him so much and you can compromise of affectionate part, then stay but don't expect any affection from him....
there is no way to change anybody, based on my own experience since I'm an affectionate person...
my ex-husband was not sexual or affectionate and that's why he's ex....we met at school and I was thinking he will change, but that never happened! I just wasted my time....