Its not unusual for the female to SHOW more affection than the guy. Maybe looking for him to show his affection as you do, has you wondering how he feels. Be more patient, and more secure, and observe his actions not just his words.
From what you have written, maybe your a bit insecure, OR inexperienced with guys, but it sounds as if things are really great, and healthy.
How old are you both, and how long have you known each other? How well do you communicate? Are there other reasons for your fears? If so, can you be specific?