there're signals of affection, expressions of love, if he sends those to you, but you're blind to them, it's frustrating to both of you. so learn that language, and talk back to him in his language. don't wait for him to learn yours, he will, in time, but men learn this kind of stuff really slow :D since they're not born with such a emotional brain (seriously) :D
they're not good at expressing feelings, but their body language doesn't lie. and their actions always speak clear and loud. train yourself to read those signs, and in return, talk back with your own body language, and your own actions. they will understand so much better than what you put in words. after all, words are cheap, aren't they? and actions, are what build your future.