FWB problem... issue...?

so this guy and i were seeing each other, went to friends, he came back after being away a month and proposed FWB...so thats been the last month... a couple weeks ago he told a couple that im not affectionate... i called him on it later and he said he never said that... he had a couple drinks so i let it go... now im not affectionate... when we are hooking up sure... or if we are out and he makes the move yeah im affectionate...i will hold his hand...but im not that way... not because of him...it is just how i am... anyway its been bugging me because if we are only FWB... why should it matter how affectionate i am...that to me seems to fall into the realm of bf/gf...any thoughts on it?